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StarTech.com 2 Port PCI RS422/485 Serial Adapter Card with 161050 UART Model PCI2S4851050
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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
Syba 8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SI-ADA15071
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Syba 8 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SI-ADA15071
  • Type: Controller Card
  • External Ports: 8 x Serial Ports
  • Operating Systems Supported: Windows 10 or Higher Ubuntu 19.04 or Higher
  • Package Contents: 8 Port Serial DB9 M.2 B+M Key Module Driver CD x1 Manual x1
  • Model #: SI-ADA15071
MSI USB4 PD100W Expansion Card, PCIe 4.0 x4, Dual USB4 Type-C (40Gbps), Dual DisplayPort 1.4 Input, Up to 100W Power Delivery
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MSI
MSI USB4 PD100W Expansion Card, PCIe 4.0 x4, Dual USB4 Type-C (40Gbps), Dual DisplayPort 1.4 Input, Up to 100W Power Delivery
  • External Ports: 2 x USB 4.0 ports (USB-C) 2 x DisplayPort input ports
  • Model #: USB4PD100W
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  • $99.99 –
  • 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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  • $30.99 –
  • Save: 6%
  • $1.99 Shipping
StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Model PEX4S232485
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StarTech.com 4 Port PCI Express PCIe Serial Combo Card - 2 x RS232 2 x RS422 / RS485 Model PEX4S232485
  • Type: PCI Express to Serial Port Card
  • External Ports: 2 x RS232 2 x RS422 / RS485
  • Operating Systems Supported: Windows 8 (32/64bit), 7 (32/64), Vista(32/64), XP(32/64), 2000 Windows Server 2008 R2, 2003(32/64) Linux Kernel 2.6.x
  • Specifications: Data Bits: 5, 6, 7, 8 FIFO: 256 Bytes Flow Control: None, Xon/Xoff, RTS/CTS Max Baud Rate: 460.8 Kbps Parity: None, Odd, Even, Space, Mark Serial Protocol: RS-232/422/485 Stop Bits: 1, 1.5, 2 Supported Protocols: RS-232, RS-422, RS-485 2-wire / 4-wire
  • Model #: PEX4S232485
  • $147.07 - $150.07
StarTech PEX16S550LP PCI Express Serial Card - 16 Port Low-Profile Serial Card - High-Speed PCIe Serial Adapter - Serial Controller DB9 RS232
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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
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  • $425.99 –
  • 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
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  • $28.69 –
  • Free Shipping
Silverstone Add-On Card Model SST-ECU04-E
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Silverstone Add-On Card Model SST-ECU04-E
  • Type: Low profile - PCI-E 2.0 x2 (10Gbps)
  • Internal USB Ports: 2 x 19pin USB 3.1 ports
  • Standard: USB 3.1
  • Data Transfer Rate: Up to 10Gbps
  • Model #: SST-ECU04-E
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  • $45.99 –
  • Free Shipping
SIIG 4-Port USB 3.0 PCIe Model JU-P40412-S1
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SIIG 4-Port USB 3.0 PCIe Model JU-P40412-S1
  • Type: PCI Express to USB Card
  • External USB Ports: 4x 9-pin, Type A, USB 3.0, Female, External
  • Internal Ports: 1x 15-pin, SATA power connector
  • Standard: USB 3.0
  • Model #: JU-P40412-S1
HP Dual TBT4 PCIe x4 Low Profile Card - PCI Express x4 - 5 GB/s - 340L1AA
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acomdata 2-Port SuperSpeed USB 3.0 PCI-Express Card Model ADPU3-PCIX
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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
SYBA PCI-Express 1-Port DB9 RS232 Serial Card with Low Profile Bracket - RoHS Model SD-PEX15021
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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
NVME to SATA Adapter 6Gbps, RIITOP M.2 NVMe to SATA 3.0 Card, Support HDD SSD Hard Disk Drive, Come with 6x SATA3 Cables
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  • $36.99 –
  • Free Shipping
  • $36.50 - $36.99
USB C 20Gbps PCIe 3.0 Card,PCI Express x4 to USB 3.2 Gen2X2 Type-C Expansion Card with Full-Profile & Low-Profile Bracket,USB 3.2 20Gb/s to PCIe Add On Card Adapter - SATA Powered
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  • $40.49 –
  • Free Shipping
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
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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 10/30

  • 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
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  • $18.89 –
  • Free Shipping
SIIG JU-P40A11-S1 DP USB 3.0 4-Port PCIe Host Card
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SIIG JU-P40A11-S1 DP USB 3.0 4-Port PCIe Host Card
  • Type: PCI Express to USB Card
  • External USB Ports: 4x 9-pin USB 3.0 Type A, Female
  • Standard: FCC, CE, RoHS
  • Data Transfer Rate: USB data transfer rate: Up to 5Gbps
  • Model #: JU-P40A11-S1
  • $49.99
  •  
  • $46.99 –
  • Save: 6%
  • Free Shipping
Silverstone Add-On Card Model SST-ECWA2-LITE
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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
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  • $28.99 –
  • Free Shipping
Qnap Qm2-4P-384 M.2 To Pci Express Adapter
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Qnap Qm2-4P-384 M.2 To Pci Express Adapter
  • Brand: QNAP
  • Model #: QM2-4P-384
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  • $272.99 –
  • 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
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  • $16.79 –
  • Free Shipping
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
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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 10/30

  • 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
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  • $21.49 –
  • Free Shipping
Motherboard Mini PCI Express to Dual USB 3.0 20-pin Expansion Card Adapter,Mini PCIe PCI-e to 2 ports USB 3.0 w/ SATA power
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Motherboard Mini PCI Express to Dual USB 3.0 20-pin Expansion Card Adapter,Mini PCIe PCI-e to 2 ports USB 3.0 w/ SATA power

Limited time offer, ends 10/30

  • 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 SATA to take power by the board, or you can into a small Molex 4PIN power. (To change, please contact customer service) Built-in 19-pin can turn out two USB3.0 ports Compliance with PCI-Express Specification Revision 2.0 Compliance with xHCI specification version 1.0 Compliance with USB3.0 SuperSpeed specification version 1.0 USB support hot swap function Support Windows XP / 2003 / Vista / win7 / win8 / 2003 / linux, can provide LINUX drivers. Note: Mini PCI-E because without a 5V power supply, not directly to the USB-powered, so it can be inserted using the SATA power cabl...
  • Model #: 11-001-241
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  • $21.49 –
  • Free Shipping
StarTech.com 9-pin Serial to 10-pin Header Slot Plate with Low Profile Bracket Model PLATE9MLP
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StarTech.com 9-pin Serial to 10-pin Header Slot Plate with Low Profile Bracket Model PLATE9MLP
  • Type: Serial Header Adapter
  • Specifications: Connectors DB9 Male, IDC 10 Cable Length 9" (229mm)
  • Weight: 0.05
  • Parts: 1 year limited
  • Model #: PLATE9MLP
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
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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 10/07

  • Type: PCIe expansion card
  • Model #: PCE32-ACE20P-UT
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  • $39.99 –
  • Free Shipping
  • $37.50 - $39.99
StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA / SP4 Power Model PCIUSB3S4
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StarTech.com 4 Port PCI SuperSpeed USB 3.0 Adapter Card with SATA / SP4 Power Model PCIUSB3S4
  • Type: PCI to USB Card
  • External USB Ports: 4x USB Ports
  • External Ports: 4 - USB 3.0 A (9 pin; SuperSpeed) Female
  • Internal Ports: 1 - SATA Power (15 pin) Plug 1 - SP4 (4 pin; Small Drive Power) Plug
  • Model #: PCIUSB3S4
M Key M.2 PCIe NGFF SSD to PCI-e Express 5.0 x4 Adapter Card Controller with Heatsink for 2230 2242 2260 2280 mm M Key M.2 PCIe Based AHCI NVMe SSD
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  • $14.99 –
  • Free Shipping
  • $14.50 - $14.99
10Gtek 10Gb PCI-E NIC Network Card, Dual Copper RJ45 Port, with Intel X540 Controller, Compare to Intel X540-T2, PCI Express Ethernet LAN Adapter Support Windows Server/Windows/Linux/ESX
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  • $50.99 –
  • Free Shipping
AAAwave PCI Express 1X to 16X Riser Card 1 to 4 USB3.0 Multiplier Hub Adapter Pack of 2
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  • $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
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  • $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
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  • $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
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