Skip to main content
  • In Stock
  • Sold by Newegg
  • Make an Offer
  • New
Brands
Show More
Price
Show More
Type
Show More
External USB Ports
Show More
Thunderbolt 3
External 1394 Ports
Sold by
All Top Brands
Availability
Condition
Current Promotion
Discount
Useful Links
Customer Ratings
  • Featured Brands

    See Deals from Rosewill
Sort By:
View:
StarTech.com x4 PCI Express to SFF-8643 Adapter for PCIe NVMe U.2 SSD Model PEX4SFF8643
Quick View
StarTech.com x4 PCI Express to SFF-8643 Adapter for PCIe NVMe U.2 SSD Model PEX4SFF8643
  • Type: x4 PCI Express to SFF-8643
  • Specifications: Add high-performance enterprise-class storage to your PC or server Upgrade your system by providing compatibility for U.2 NVMe SSDs like the Intel SSD 750 series through a 4-lane PCI Express expansion card x4 PCIe to SFF-8643 adapter for PCIe NVMe U.2 SSD PCI Express 2.5in. NVM Express SSD adapter PCI Express 3.0x4 lane host adapter Compatible with PCIe 3.0 and PCIe 2.0 motherboards Provides faster read/write speeds and enhanced producvity for data-heavy workloads
  • Dimensions: 0.90" x 3.10" x 3.70"
  • Weight: 1.00 oz.
  • Model #: PEX4SFF8643
SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022
Quick View
SYBA PCI-Express 2-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15022
  • Type: PCI Express to Serial Port Card
  • External Ports: 2 x Serial Ports
  • Operating Systems Supported: Supports Windows 2000, XP 32/64-bit, Server 2003 32/64-bit, Vista 32/64-bit, Server 2008 32/64-bit
  • Weight: 0.35
  • Model #: SD-PEX15022
  • $30.99
  •  
  • $16.99 
  • Save: 45%
  • Free Shipping
SYBA 2-Port SATA 6G Card, Mini PCI-Express Form Factor, non-RAID, ASM1061 Chipset Model SD-MPE40056
Quick View
SYBA 2-Port SATA 6G Card, Mini PCI-Express Form Factor, non-RAID, ASM1061 Chipset Model SD-MPE40056
  • Type: PCI Express to SATA Card
  • Internal Ports: 2 x SATA 3.0
  • Data Transfer Rate: 6.0 Gbps
  • Operating Systems Supported: Windows 7 32/64-bit Vista 32/64-bit Windows XP 32/64-bit Server 2003-2008 32/64-bit
  • Model #: SD-MPE40056
  • $29.99
  •  
  • $14.99 
  • Save: 50%
  • Free Shipping
SATA 3.0 5 Ports Hard Drive Hub Expansion Card Splitter,SATAIII 6Gbps Riser Card w/SATA & DC 5V Power for Win7 Win8 Win XP, etc,Requires Motherboard SATA Port Multiplier Supporting
Quick View
  •  
  • $28.69 
  • Free Shipping
2PORT PCI EXPRESS SERIAL CARD
Quick View
2PORT PCI EXPRESS SERIAL CARD
  • Color: Black
  • Model #: PEX2S1050
StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter Card Model PEX1TO162
Quick View
StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter Card Model PEX1TO162
  • Type: PCI Express to PCI Card
  • Data Transfer Rate: 2.5 Gbps
  • Specifications: Connectors: 1 x x1 PCI Express Male 1 x x16 PCI Express Female
  • Dimensions: 4.99" x 1.74" x 0.33"
  • Model #: PEX1TO162
  • $32.99
  •  
  • $30.99 
  • Save: 6%
  • $1.99 Shipping
StarTech.com PCI Express to 2 PCI & 2 PCIe Expansion Enclosure System - Full Length
Quick View
StarTech.com PCI Express to 2 PCI & 2 PCIe Expansion Enclosure System - Full Length
  • Type: Riser Card
  • Specifications: Expansion Slots:2 x PCI 32-bit/33 MHz Full-height 2 x PCI Express x1 Host Interface:PCI Express
  • Weight: 20
  • Parts: 2 Year
  • Model #: PEX2PCIE4L
StarTech.com TB31PCIEX16 Thunderbolt 3 PCIe Expansion Chassis - Thunderbolt 3 to 16 x PCIe - Aluminum - PCIe SSD - External PCIe Enclosure - PCIe Slot
Quick View
StarTech.com TB31PCIEX16 Thunderbolt 3 PCIe Expansion Chassis - Thunderbolt 3 to 16 x PCIe - Aluminum - PCIe SSD - External PCIe Enclosure - PCIe Slot
  • Type: Thunderbolt 3 to PCIe x16 and DisplayPort
  • External Ports: 2 x Thunderbolt 3 USB-C (24-pin) Female 1 x DisplayPort (20 pin) Female
  • Internal Ports: 1 x PCI Express x16 Female
  • Data Transfer Rate: Up to 40 Gbps (Thunderbolt 3)
  • Model #: TB31PCIEX16
StarTech.com 2 Port PCI RS422/485 Serial Adapter Card with 161050 UART Model PCI2S4851050
Quick View
StarTech.com 2 Port PCI RS422/485 Serial Adapter Card with 161050 UART Model PCI2S4851050
  • Type: PCI to Serial Port Card
  • External Ports: 2 x Serial Ports
  • Operating Systems Supported: Windows 7 (32/64bit)/ Vista(32/64)/ XP(32/64) Windows Server 2008 R2/ 2003(32/64)/ 2000 Linux 2.4.x/ 2.6.x
  • Specifications: Bus Type: PCI / PCI-X (5 / 3.3V) Card Type: Standard Profile (LP bracket incl.) Chipset ID: SystemBase -SB16C1052PCI Connector Type(s): PCI / PCI-X (Universal 3.3 & 5V 32-bit) Male Data Bits: 5, 6, 7, 8 External Ports: DB-9 (9 pin ; D-Sub) Male FIFO: 256 Bytes Flow Control: Xon, Xoff, RTS#, CTS# Humidity: 5~85% RH Included in Package: 2 port PCI RS422/485 card Driver CD Low profile (half-height) brackets User Manual Industry Standards: PCI Local Bus Specification 2.3 PCI Power Management 1.1 Interface: Serial Max Baud Rate: 128 Kbps Operating Temperature: -10°C to 80°C (14°F to 176°F) OS Compatibility: Windows® 8 / 8.1 (32/64b...
  • Model #: PCI2S4851050
StarTech.com PEX4S953LP 4-Port PCI Express RS232 Serial Adapter Card - 16950 UART - 256-byte FIFO Cache - ASIX AX99100 - Low Profile Bracket - Replacement for PEX4S952LP (PEX4S953LP)
Quick View
StarTech.com PEX4S953LP 4-Port PCI Express RS232 Serial Adapter Card - 16950 UART - 256-byte FIFO Cache - ASIX AX99100 - Low Profile Bracket - Replacement for PEX4S952LP (PEX4S953LP)
  • Type: PCI Express to Serial Port Card
  • External Ports: 4 - DB-9 (9 pin, D-Sub) Male
  • Internal Ports: 1 - LP4 (4 pin; Large Drive Power) Male Input
  • Operating Systems Supported: Windows 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 2.6.x LTS Versions only
  • Model #: PEX4S953LP
acomdata 2-Port SuperSpeed USB 3.0 PCI-Express Card Model ADPU3-PCIX
Quick View
acomdata 2-Port SuperSpeed USB 3.0 PCI-Express Card Model ADPU3-PCIX
  • Type: PCI Express to USB Card
  • External USB Ports: 2 x USB 3.0 Ports
  • Standard: USB 3.0
  • Data Transfer Rate: Up to 5.0 Gbps
  • Model #: ADPU3-PCIX
  • $28.99
  •  
  • $19.99 
  • Save: 31%
  • $2.99 Shipping
StarTech PEX16S550LP PCI Express Serial Card - 16 Port Low-Profile Serial Card - High-Speed PCIe Serial Adapter - Serial Controller DB9 RS232
Quick View
StarTech PEX16S550LP PCI Express Serial Card - 16 Port Low-Profile Serial Card - High-Speed PCIe Serial Adapter - Serial Controller DB9 RS232
  • Type: PCI Express
  • External Ports: 16 x DB-9 (9 pin, D-Sub) Male
  • Internal Ports: 1 x SP4 (4 pin, Small Drive Power) Male
  • Operating Systems Supported: Windows 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.6x to 4.2x LTS Versions only
  • Model #: PEX16S550LP
  •  
  • $422.99 
  • Free Shipping
StarTech.com PEX8S1050LP 8-Port PCI Express Serial Card - 16C1050 UART RS232 - PCIE Low Profile Bracket - DB9 Serial Card (PEX8S1050LP)
Quick View
StarTech.com PEX8S1050LP 8-Port PCI Express Serial Card - 16C1050 UART RS232 - PCIE Low Profile Bracket - DB9 Serial Card (PEX8S1050LP)
  • Type: PCI Express to Serial Port Card
  • External Ports: 8 x DB-9 (9 pin, D-Sub) Male
  • Internal Ports: 1 x PCI Express x1 Male
  • Operating Systems Supported: Windows CE 5.0, 98SE, 2000, XP, Vista, 7, 8, 8.1, 10 Windows Server 2003, 2008 R2, 2012, 2016, 2019 Linux 2.4.x to 4.11.x LTS Versions only
  • Model #: PEX8S1050LP
EnLabs PCIEU3C20SC PCIe Express Card to USB 3.0 Type-C w/ 2.4A Quick Charging and 19Pin USB 3.0 Dual,Port Power by 15pin SATA
Quick View
EnLabs PCIEU3C20SC PCIe Express Card to USB 3.0 Type-C w/ 2.4A Quick Charging and 19Pin USB 3.0 Dual,Port Power by 15pin SATA

Limited time offer, ends 07/31

  • Type: PCI Express to USB Card
  • External USB Ports: 2 Ext / 2 Int
  • External Ports: USB 3.0 Type-C +2.4A Quick Charging
  • Internal Ports: USB 3.0 20pin
  • Model #: PCIEU3C20SC
  •  
  • $18.89 
  • Free Shipping
EN-Labs M.2 NVMe M-Key to SFF-8643 Adapter Expansion Card, MiniSAS to NVMe PCIe 4.0 Card for U.2 (SFF-8639) NVMe SSD - Support Intel 750 SSD
Quick View
  •  
  • $16.79 
  • Free Shipping
Silverstone Add-On Card Model SST-ECWA2-LITE
Quick View
Silverstone Add-On Card Model SST-ECWA2-LITE
  • Type: Mini PCI Express to PCI Express
  • External USB Ports: 1 x 9pin USB 2.0 pin header, 1 x USB Type-A female port
  • Standard: 1 x Low profile PCI-E
  • Specifications: Adapter card Connector: 52pin Mini PCI-E connector 1 x 9pin USB 2.0 pin header 1 x USB Type-A female port Bracket: 1 x Standard 1 x Low profile Support voltage: 1.5V and 3.3V Antenna Type: Dipole Gain(dBi): 2.4 - 2.5GHz 2dBi 5.1 - 5.8GHz 3dBi Polarization: Linear Vertical Radiation: Omni-directional SWR <= 2.0 Impedance: 50 Ohms Max power: 50W
  • Model #: SST-ECWA2-LITE
  •  
  • $30.99 
  • Free Shipping
SYBA PCI-Express 1-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15021
Quick View
SYBA PCI-Express 1-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15021
  • Type: PCI Express to Serial Port Card
  • External Ports: 1 x Serial Port
  • Operating Systems Supported: Windows 2000, XP 32/64-bit, Server 2003 32/64-bit, Vista 32/64-bit, Server 2008 32/64-bit
  • Weight: 1
  • Model #: SD-PEX15021
Qnap Qm2-4P-384 M.2 To Pci Express Adapter
Quick View
  •  
  • $272.99 
  • Free Shipping
StarTech.com 4-Port USB Type-C PCIe Card - USB 3.2 10Gbps - USB-C PCI Express Expansion Card - 4x Independent USB Controllers - TAA-Compliant (P10Q4C-USB-CARD-LP)
Quick View
Motherboard Mini PCI Express to Dual USB 3.0 20-pin Expansion Card Adapter,Mini PCIe PCI-e to 2 ports USB w/ Molex 4-pin Power
Quick View
Motherboard Mini PCI Express to Dual USB 3.0 20-pin Expansion Card Adapter,Mini PCIe PCI-e to 2 ports USB w/ Molex 4-pin Power

Limited time offer, ends 07/31

  • Type: Controller Card
  • Specifications: Main chip: NEC UPD720202 chipset Have unused mini PCIe slot for PC expansion slot a 19-pin USB3.0 theoretical transfer rate up to 5Gbps, much higher than the USB2.0 480Mb / s, up to 10 times; Backward compatible with USB2.0, USB1.1, USB1.0 Transfer rate: 5Gbps/ 480Mbps/ 12Mbps / 1.5Mbps Small Molex 4 pin to take
  • Features: This product is an ideal choice for any Mini PCI-Express expansible embedded or micro system needing larger volume and higher speed data transfer connectivity with USB devices. Real world applications such as: Connect to external hard disk drive, fast Solid State Drive(SSD), optical driver, high definition video camera etc.
  • Package Contents: 1 Piece Mini PCI-e to USB Expantion Card 1 Piece CD Driver
  • Model #: 11-001-242
  •  
  • $21.49 
  • Free Shipping
2 Port SATA 3 Card, RIITOP PCI-e Express x1 SATA iii 6Gbps Adapter Card, SATA 3.0 Controller Card ASM1061 Chipset, Support 2 SATA 3.0 Devices
Quick View
2 Port SATA 3 Card, RIITOP PCI-e Express x1 SATA iii 6Gbps Adapter Card, SATA 3.0 Controller Card ASM1061 Chipset, Support 2 SATA 3.0 Devices

Limited time offer, ends 07/13

  • Type: PCI Express to SATA Card
  • External Ports: 2 x SATA III
  • Operating Systems Supported: Support Windows XP/Server 2003/Vista/7 /8 (32/64 bit) /MAC/linux
  • Compatibility: Have one of the available PCI-Express slots(PCIe x1 or above). Windows operating system support (R) XP/Server 2003/Vista/7 /8 (32/64 bit) /MAC/linux
  • Model #: PCES3-2I
  •  
  • $20.99 
  • Free Shipping
  • $18.00 - $20.99
iStarUSA DD-766R-2U 2U PCIe x16 to PCIe x16 Reversed Riser Card
Quick View
iStarUSA DD-766R-2U 2U PCIe x16 to PCIe x16 Reversed Riser Card
  • Type: Riser Card
  • Specifications: 2U PCIe x16 to PCIe x16 Reversed Riser Card MB Slot Position: 7 (reversed)
  • Model #: DD-766R-2U
  •  
  • $69.00 
  • $4.99 Shipping
ORICO USB 3.0 PCI Express Card Hub Controller Adapter Card with 2 Rear USB 3.0 Hosts and Internal USB 3.0 with 15PIN Power Connector -Black
Quick View
ORICO USB 3.0 PCI Express Card Hub Controller Adapter Card with 2 Rear USB 3.0 Hosts and Internal USB 3.0 with 15PIN Power Connector -Black
  • Type: PCI Express to USB3.0 Card
  • External USB Ports: 2x USB3.0 Ports
  • Internal USB Ports: USB3.0 20PIN Internal but not USB Ports Internal,Need to work with other USB3.0 20PIN Adapter to Achieve 2x USB3.0 Ports for Front Panel
  • External 1394 Ports: None
  • Model #: PVU3-2O2I-V1
  •  
  • $16.99 
  • Free Shipping
iStarUSA DD-666-2U-M 2U PCIe x16 to PCIe x16 Riser Card Middle Position
Quick View
iStarUSA DD-666-2U-M 2U PCIe x16 to PCIe x16 Riser Card Middle Position
  • Type: Riser Card Middle Position
  • Specifications: 2U PCIe x16 to PCIe x16 Riser Card Middle Position MB Slot Position: 6 *Notes: too tall for D Storm 2U chassis. need modification
  • Model #: DD-666-2U-M
  •  
  • $67.99 
  • $4.99 Shipping
USB 3.1 PCIe Card, RIITOP PCI-e 3.0 to USB3.2 Gen1 Adapter (10Gbps) Expands to 20Pin + Type-E + 1xUSB 3.0 + 1x USB C
Quick View
USB 3.1 PCIe Card, RIITOP PCI-e 3.0 to USB3.2 Gen1 Adapter (10Gbps) Expands to 20Pin + Type-E + 1xUSB 3.0 + 1x USB C

Limited time offer, ends 07/13

  • Type: PCIe expansion card
  • Model #: PCE32-ACE20P-UT
  •  
  • $39.99 
  • Free Shipping
  • $37.50 - $39.99
RIITOP PCIe to A1466 SSD Adapter PCI-e 4x Controller Card for Apple 2013 2014 2015 2016 2017 MacBook Air Pro Retina A1465 A1466 A1398 A1502 SSD
Quick View
RIITOP PCIe to A1466 SSD Adapter PCI-e 4x Controller Card for Apple 2013 2014 2015 2016 2017 MacBook Air Pro Retina A1465 A1466 A1398 A1502 SSD

Limited time offer, ends 07/13

  • Type: PCI Express Controller Card
  • Compatibility: SUPPORT the following models: 2013-2014 Macbook Air A1465 A1466 ( MD711A MD711B MD712A MD712B MD760A MD760B MD761A MD761B) SSD; 2013 MacBook Pro Retina A1398 A1502 (ME864 ME865 ME866 ME293 ME294) SSD; 2014 MacBook Pro Retina A1502 A1398 (MGX72 MGX82 MGX92 MGXA2 MGXC2) SSD; 2015 MacBook Pro retina A1502 A1398(MF839 MF840 MF841 MGXA2 MGXC2) SSD; 2015 MacBook Air A1465 A1466(MJVM2 MJVP2 MJVE2 MJVG2) SSD; 2016 MacBook Air A1466(MMGF2 MMGG2) SSD;
  • Specifications: 1. DON'T support Macbook air a1466(2012), Macbook pro 2016. 2. Please make sure correct forward side pins (16+12) back side(14+11). Please make sure your SSD models before buying! It can not support 2010 and 2011 version MacBook Air A1370 and A1369 SSD,it can not support 2012 version MacBook Air A1465 and A1466 SSD,it can not support 2012 and Early 2...
  • Model #: AP13TPCE4X
  •  
  • $16.99 
  • Free Shipping
  • $13.50 - $16.99
SYBA USB 3.0 PCI-Express 2-port SATA Powered Controller Card Model SY-PEX20124
Quick View
SYBA USB 3.0 PCI-Express 2-port SATA Powered Controller Card Model SY-PEX20124
  • Type: PCI Express to USB Card
  • External USB Ports: 2x USB Ports
  • Internal Ports: 1 x SATA
  • Standard: USB 3.0
  • Model #: SY-PEX20124
AAAwave PCI Express 1X to 16X Riser Card 1 to 4 USB3.0 Multiplier Hub Adapter Pack of 2
Quick View
  •  
  • $49.99 
  • Free Shipping
BUCIER PCIE X1 to SATA Card 4 Port, 6Gbps SATA 3.0 Controller, Includes 4 SATA Cables and Low Profile Bracket, for Windows 10/11
Quick View
  •  
  • $32.88 
  • Free Shipping
BUCIER PCIE X4 to SATA Card 6 Port, 6Gbps SATA 3.0 Controller, Includes 6 SATA Cables and Low Profile Bracket, for Windows 10/11
Quick View
  •  
  • $48.88 
  • Free Shipping

Giving a computer additional capabilities requires fitting the computer with an add-on card, also called an expansion card, interface card or just plain card. Expansion controller cards have sockets that connect to conductors carrying data within the system. The connector you use depends on the card and computer. Cards provide communications interfaces, extra memory, video sound I/O capabilities, system interfaces for discs or tape backup devices and additional processors in general. Controller cards are an excellent example of an add-on card because the card acts as an interface for the motherboard, and other computer components like HDD, optical drives and keyboards. Add-on cards are suitable for use with printers and other devices in office environments.

Add-on Cards Improve Audio for Gaming, Movies and Music

Having a computer with a dynamite sound card or audio system makes gaming, watching movies and listening to music a lot more enjoyable and immersive. The sound card is an add-on card that facilitates each audio component, including multimedia applications such as music composition, presentations, audio editing and entertainment. Most PCs offer a standard sound experience, and improving the audio quality is simple with sound card accessories. Some standard accessories in the collection are USB audio interfaces, high-performance headphone amplifiers and virtual 7.1 channel surround sound systems. You can also add parallel printer cards to increase or upgrade the system.

PC Game Controllers Raise the Full Immersion Experience

Kicking your gaming to a whole new level of experience necessitates selecting a PC game controller that mirrors the gear handled in real-life situations. Some players feel comfortable using straightforward game controllers, like racing wheels or flight joysticks. Those who want the ultimate experience with full immersion in their favorite game need to consider empowering their system's performance. With the introduction of more elaborate controllers, such as VR headsets, rudder pedals, pro racing wheel stands and flight simulation, the upside is the new controllers require no new add-on cards. Plug the game controller USB cable into your system and Windows® 10 will detect it, and you are set up. Being immersed in your gaming scenario means using suitable PC game controllers. The performance will leave you feeling like you just flew a plane or raced a car like a professional, without leaving your house. As you track your statistics and see how much your game scores improve, empowering your system with quality PC controllers will prove worthwhile.

VR Accessories Possibilities Are Endless

Distinguishing the many uses of Virtual Reality (VR) accessories goes beyond gaming. Many fields in the educational and business community utilize VR accessories for vocational training, engineering and designing. The accessories begin with headsets, cables, connectors, 3D glasses, Bluetooth® remote controls and carrying cases. Some accessories come as a bundle, so you have gear and hardware upgrades like controller cards. Once the equipment is in place, you can begin gaming, training or virtual conceptualizing with high efficiency. The possibilities for you to produce and discover using the VR equipment and software are endless.

Bestselling Add-On Cards Reviews:

michael p.
7/3/2026 9:46:15 PM
Works great.

“ For those who don't know, you can put any size PCIE addon card from x1 to x16 into a PCIE x16 slot and it will work just fine. ”

EN-Labs USB C Motherboard Header PCIe Card, USB 3.2 20Pin Internal Connector PCI Express Card for Front Panel, USB 10Gbps Type-E A-Key & USB 2.0 Type-A Female Expansion Card with Full-Profile Bracket
Douglas N.
10/27/2024 10:45:32 AM
Low cost alternative to adapting old PCI cards

“ low cost alternative to adapting PCI cards simple and straight-forward installation ”

StarTech.com PCI Express to PCI Adapter Card Model PEX1PCI1
Anonymous
11/11/2023 7:00:07 PM
Plug it in and it works. Just what I wanted.

“ Simple USB3.0 Add-on Card with 19/20 pin header. ”

4 Port PCIE PCI-e to USB 3.0 (2 x Type A+ 20 Pin Internal) Expansion Card Hub Controller PCI Express Card Adapter w/ Molex Power
Matthew W.
6/10/2023 7:37:42 AM
Easy way to add fast storage to Dell Precision Workstation

“ Better construction and heat distribution then the more expensive Dell add on card. ”

ASUS Hyper M.2 x16 PCIe 3.0 x4 Expansion Card V2 supports 4 NVMe M.2 (2242/2260/2280/22110) up to 128 Gbps for Intel VROC and AMD Ryzen Threadripper NVMe RAID