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StarTech.com PEX1S953LP 1 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
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StarTech.com PEX1S953LP 1 Port RS232 Serial Adapter Card with 16950 UART - PCI Express Serial Port Card - 921.4Kbps - Windows & Linux Compatible
  • Type: PCI Express to Serial Port Card
  • External Ports: 1 x DB-9 (9 pin, D-Sub) Male
  • Internal Ports: 1 x LP4 (4 pin; Large Drive Power) Male Input 1 x PCI Express x1 Male
  • Operating Systems Supported: Windows Server 2003, 2008 R2, 2012, 2012 R2, 2016 Linux 2.4.x to 2.6.x LTS Versions only
  • Model #: PEX1S953LP
ESTONE PCI Express Expansion Card, USB 3.0 5 Port Front Expansion Card, Connect 7 Devices Expanded - (2X USB C - 3X USB A)
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ESTONE PCI Express Expansion Card, USB 3.0 5 Port Front Expansion Card, Connect 7 Devices Expanded - (2X USB C - 3X USB A)

Limited time offer, ends 11/19

  • Type: PCI to USB Card
  • External USB Ports: 5x USB Ports
  • Data Transfer Rate: Up to 5.0 Gbps
  • Operating Systems Supported: Windows 7/8/10/11
  • Model #: E-PCIE23A2C-6
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  • $30.99 –
  • Free Shipping
3 x 9dBi RP-SMA High Gain WiFi Antennas Linksys EA6900 ASUS RT-AC66U RT-AC68U
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  • $19.99 –
  • Free Shipping
PCIe USB C Expansion Adapter Card 20Gbps, RIITOP USB Type C to PCI Express 3.0 x4 Controller Card, ASMedia 3242 Chipset, Support Windows & Linux
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  • $33.99 –
  • Free Shipping
  • $33.50 - $33.99
ESTONE PCI Express Expansion Card, 10Gbps USB 3.2 Gen 2 5-Port Front Expansion Card, Connect5 Devices Expanded - (3X USB C - 2X USB A)
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ESTONE PCI Express Expansion Card, 10Gbps USB 3.2 Gen 2 5-Port Front Expansion Card, Connect5 Devices Expanded - (3X USB C - 2X USB A)

Limited time offer, ends 11/19

  • Type: PCI to USB Card
  • External USB Ports: 5x USB Ports
  • Standard: USB 3.2
  • Data Transfer Rate: Up to 10 Gbps
  • Model #: E-PCIE22A3C3.2-2
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  • $42.99 –
  • Free Shipping
BQZYX+ Pcie Riser Cable PCI-e PCI Express 8X Extension pci-e 8X Card(180 Degree 20cm Extension Cord
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  • $51.39 –
  • Free Shipping
StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter Card Model PEX1TO162
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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
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  • $28.99 –
  • Save: 12%
  • $1.99 Shipping
PCI-E 1 Parallel port 1 Serial card pcie to COM9 pin RS232 industrial control serial port expansion card AX99100 chip
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  • $25.51 –
  • Free Shipping
PCI-Express 3.0/4.0 16x Riser Card 90 Degree High Speed Riser Card for 1U / 2U Server Case (PCI-E 3.0 for 1U)
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  • $16.06 - $16.35
eShinreal Dual 6Gb/s PCIe x4 to M.2 SATA 3 RAID Controller Card 88SE9230
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  • $68.00 –
  • $16.00 Shipping
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)
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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
Super Speed USB 3.0 PCI-E 2 Port PCI Express Expansion Card 19-Pin Power Connector for Desktops PC PCI Express USB 3.0 Cards
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  • $24.06 –
  • Free Shipping
PCIe SATA Card 6Ports, RIITOP PCI-e Express to SATA3 6Gbps Expansion Controller Adapter Card, ASM1166 Chip Non-Raid,with 6 SATA Cables and Low Profile Bracket, Support 6 SATA 3.0 Devices
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PCIe SATA Card 6Ports, RIITOP PCI-e Express to SATA3 6Gbps Expansion Controller Adapter Card, ASM1166 Chip Non-Raid,with 6 SATA Cables and Low Profile Bracket, Support 6 SATA 3.0 Devices

Limited time offer, ends 11/10

  • Type: PCI Express Controller Card
  • Internal Ports: 6x SATA 3.0
  • Standard: PCI-e Express to SATA 3.0 Expansion Card Adapter
  • Data Transfer Rate: 6.0 Gbps
  • Model #: PCES36P+CB
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  • $41.99 –
  • Free Shipping
  • $39.50 - $41.99
QNAP QM2 SERIES, 2 X PCIE 2280 M.2 SSD SLOTS, PCIE GEN3 X 4 , 2 X INTEL I225LM 2.5GBE NBASE-T PORT PCIE GEN3X4 2XINTEL I225LM 2.5GBE
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QNAP QM2 SERIES, 2 X PCIE 2280 M.2 SSD SLOTS, PCIE GEN3 X 4 , 2 X INTEL I225LM 2.5GBE NBASE-T PORT PCIE GEN3X4 2XINTEL I225LM 2.5GBE
  • Type: PCI Express 3.0 x4 to M.2 Card
  • External Ports: 2 x 2.5GbE RJ-45
  • Internal Ports: 2 x M.2 2280 PCIe (Gen3 x2) NVMe SSD slots
  • Dimensions: 2.71" x 6.01" x 0.81"
  • Model #: QM2-2P2G2T
Micro Connectors M.2 NVMe PCIe 3.0 x4 Adapter
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eShinreal 1-Port SFF-8643 to PCIe 3.0 x16 Slot Adapter
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eShinreal 1-Port SFF-8643 to PCIe 3.0 x16 Slot Adapter
  • Type: Controller Card
  • Model #: XIC 6911
SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S
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SYBA PCI to Serial 2-port host controller card Model SD-PCI-2S

Limited time offer, ends 11/01

  • Type: PCI to Serial Port Card
  • External Ports: 2x DB9 serial port connectors
  • Operating Systems Supported: Windows 98SE/ME/2000/XP/NT4.0, Linux & DOS Operating System
  • Weight: 0.4
  • Model #: SD-PCI-2S
HOOCCC M.2 NVMe to PCIe 4.0 x16 Graphics Card Adapter Cable, M-Key to PCIe X16 Extension Riser 180 degrees 60cm
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HOOCCC M.2 NVMe to PCIe 4.0 x16 Graphics Card Adapter Cable, M-Key to PCIe X16 Extension Riser 180 degrees 60cm
  • Brand: HOOCCC
  • Series: Adapter Card
  • Type: PCI Express Controller Card
  • Model #: M16ABZ-60cm
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  • $50.99 –
  • Free Shipping
StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power
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StarTech.com PEXUSB3S2EI 4-port PCI Express USB 3.0 card - 2 external, 2 internal - SATA power
  • Type: PCI to 1394 / USB Card
  • External USB Ports: 2-port USB 3.0
  • Internal USB Ports: 2x USB Ports
  • External Ports: 2 - USB 3.0 A (9 pin; SuperSpeed) Female
  • Model #: PEXUSB3S2EI
MAIWO 4-Port pcie to USB 3.0 (Type-A) Expansion Card, pcie USB Add on Card, Internal USB3 Hub Converter for Desktop PC Host Card Support Windows 10/8/7/XP and MAC OS 10.8.2 Above
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MAIWO 4-Port pcie to USB 3.0 (Type-A) Expansion Card, pcie USB Add on Card, Internal USB3 Hub Converter for Desktop PC Host Card Support Windows 10/8/7/XP and MAC OS 10.8.2 Above
  • Type: Mini PCI Express to USB Card
  • External USB Ports: 4-port USB 3.0
  • Internal USB Ports: 4x USB Ports
  • Dimensions: 4.7*4.48*0.86 inch
  • Model #: KC005A
  • $25.99
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  • $9.99 –
  • Save: 61%
  • Free Shipping
StarTech PEXUSB4DP 4 Port PCI Express Low Profile High Speed USB Card - PCIe USB 2.0 Card - PCI-E USB 2.0 Card
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StarTech PEXUSB4DP 4 Port PCI Express Low Profile High Speed USB Card - PCIe USB 2.0 Card - PCI-E USB 2.0 Card
  • Type: PCI to USB Card
  • External USB Ports: 3 x USB A Female
  • Internal USB Ports: 1 x USB A Female
  • Standard: USB 2.0
  • Model #: PEXUSB4DP
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  • $46.99 –
  • Free Shipping
SYBA SI-PEX10010 Parallel 1 Port PCI-e Controller Card with Full & Low Profile Brackets, WCH382L Chipset
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SYBA SI-PEX10010 Parallel 1 Port PCI-e Controller Card with Full & Low Profile Brackets, WCH382L Chipset

Limited time offer, ends 11/01

  • Type: PCI Express to Parallel Port
  • External Ports: 1 x Parallel Port
  • Operating Systems Supported: Windows 7 Windows Vista Windows XP Server 2012 Server 2008 Server 2003 Server 2000(32bit only) Windows ME Windows 98SE Windows 98 Linux Kernel 2.4 & 2.6 Mac 10.4 & above
  • Package Contents: 1-port Parallel PCI-e Controller Card Driver CD User Manual Low Profile Bracke
  • Model #: SI-PEX10010
SYBA 2 Serial 1 Parallel PCI-e Controller Card with Low Profile Brackets Model SI-PEX50054
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SYBA 2 Serial 1 Parallel PCI-e Controller Card with Low Profile Brackets Model SI-PEX50054
  • Type: PCI Express to Parallel / Serial Port
  • External Ports: 2 x Serial Ports + 1 x Parallel Port
  • Weight: 1
  • Package Contents: PCI-e Multi I/O Card Full Size Bracket for 2 Serial Ports Full Size Bracket for 1 Parallel Port Low Profile Bracket for 1 COM Port Low Profile Bracket for 1 Parallel Port User Manual Driver Mini CD
  • Model #: SI-PEX50054
ASRock Add-On Card Model THUNDERBOLT 3 AIC
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ASRock Add-On Card Model THUNDERBOLT 3 AIC
  • External Ports: 2 x Thunderbolt 3 Type-C Ports (with up to 40 Gbps bandwidth) Supports daisy-chaining of up to six Thunderbolt devices 1 x DisplayPort IN Port 1 x Mini DisplayPort IN Port 1 x TBT Header
  • Data Transfer Rate: Supports 40 Gbps bi-directional bandwidth per channel with Thunderbolt 3 port
  • Operating Systems Supported: Microsoft Windows 10 32-bit / 10 64-bit / 8 32-bit / 8 64-bit
  • Specifications: PCI Express 3.0 x4 interface Supports ThunderboltTM 3 interface with max. resolution of 5K (5120 x 2880)@ 60 Hz for one display over a single cable connection Supports ThunderboltTM 3 interface with max. resolution of 4K x 2K (4096x2160) @ 60 Hz for dual displays over a single cable connection Supports up to two streams (eight lanes) of DisplayPort video bandwidth; supports daisy-chaining of multiple DisplayPort monitors
  • Model #: THUNDERBOLT 3 AIC
ESTONE PCIE USB 3.2 Card 7 Ports(2X USB C - 5X USB 3.2), PCI Expree to USB Expansion Card Super Speed 10Gbps PCI-e USB3.2 Hub Controller Adapter for Windows 11/10/8/7/XP/Vista
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ESTONE PCIE USB 3.2 Card 7 Ports(2X USB C - 5X USB 3.2), PCI Expree to USB Expansion Card Super Speed 10Gbps PCI-e USB3.2 Hub Controller Adapter for Windows 11/10/8/7/XP/Vista

Limited time offer, ends 11/19

  • Type: PCI to USB Card
  • External USB Ports: 7x USB Ports
  • Standard: USB 3.1
  • Data Transfer Rate: Up to 10 Gbps
  • Model #: E-PCIE25A2C3.2-1
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  • $61.99 –
  • 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
Yung C.
7/27/2023 6:03:02 PM
Well made card with some frustration during installation

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

ASUS HYPER M.2 X16 Gen 4 Card, PCIe 4.0/3.0 to 4 x M.2 NVMe Slots, Up to 256 Gbps