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SYBA IO Crest 2-port RS232 Serial PCI-Express Card, DB9 Female Panel Mountable Field Terminator Adapters Model SI-PEX15043
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SYBA IO Crest 2-port RS232 Serial PCI-Express Card, DB9 Female Panel Mountable Field Terminator Adapters Model SI-PEX15043
  • Type: PCI Express to Serial Port Card
  • Operating Systems Supported: Windows 8 Windows 7 Vista XP Windows Server 2003, 2008, 2012 Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer
  • Dimensions: 2.25" x 7.00" x 12.00"
  • Weight: 0.75 lb.
  • Model #: SI-PEX15043
  •  
  • $39.99 –
  • Free Shipping
CableMax 4 port Serial RS-232 and 1 LPT port I/O PCI-Express 1x Card
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CableMax 4 port Serial RS-232 and 1 LPT port I/O PCI-Express 1x Card
  • Type: PCI Express to Serial Port Card
  • External Ports: 4 x Serial Ports
  • Model #: CM-4S1PRS232
  •  
  • $21.99 –
  • $3.99 Shipping
CableMax Dual Port RS-232 PCI Adapter with OXford Chip 16C950 UART
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CableMax Dual Port RS-232 PCI Adapter with OXford Chip 16C950 UART
  • Type: PCI to Serial Port Card
  • External Ports: 2 x Serial Ports
  • Operating Systems Supported: Win 7 Win 8/8.1 Win Vista Win XP
  • Model #: IO-102
  •  
  • $7.91 –
  • $3.99 Shipping
ICY DOCK ToughArmor MB840M2P-B M.2 NVMe SSD to PCIe 3.0 x4 Removable SSD Mobile Rack for PCIe Expansion Slot
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ICY DOCK ToughArmor MB840M2P-B M.2 NVMe SSD to PCIe 3.0 x4 Removable SSD Mobile Rack for PCIe Expansion Slot
  • Type: PCI Express to M.2 Card
  • External USB Ports: 1 M.2 NVME & 1 SATA
  • External Ports: 1 x M.2 PCIe NVMe SSD (2230/2242/2260/2280/22110)
  • Standard: NVMe
  • Model #: MB840M2P-B
SIIG 3-port 1394 (FireWire) PCI adapter Model NN-400012-S8
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SIIG 3-port 1394 (FireWire) PCI adapter Model NN-400012-S8
  • Type: PCI to 1394 Card
  • External 1394 Ports: 3x 1394 Ports
  • Standard: 1394A
  • Data Transfer Rate: 400/200/100 Mbps
  • Model #: NN-400012-S8
PCIE to 2 Port USB C Expansion Card Adapter 10Gbps, PCI-E Type C USB 3.2 Gen2 Controller Card with Low Profile Bracket for Windows 11/10/8/7/XP
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  •  
  • $27.99 –
  • Free Shipping
Dual M.2 PCIe Adapter, M2 SSD NVME (m-Key) or SATA (b-Key) 22110 2280 2260 2242 2230 to PCI-e 3.0 x4 Host Controller Expansion Card for Desktop PCI Express Slots
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  • $16.99 –
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SIIG 4-Port SuperSpeed USB 3.0 PCIe Card - Quad Core
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SIIG 4-Port SuperSpeed USB 3.0 PCIe Card - Quad Core
  • Brand: SIIG
  • Type: pci_x_4
  • External USB Ports: PCI Express
  • Internal Ports: PCI Express 2.0 x4
  • Model #: JU-P40811-S1
HP Ethernet 10Gb 2-port 530SFP+ Adapter
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HP Ethernet 10Gb 2-port 530SFP+ Adapter
  • Weight: 0.79
  • Parts: 1 Year
  • Model #: 652503-B21
SYBA USB 3.0 2-port PCI-e Controller Card, Etron EJ168 Chipset Model SY-PEX20081
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SYBA USB 3.0 2-port PCI-e Controller Card, Etron EJ168 Chipset Model SY-PEX20081
  • Type: PCI Express to USB Card
  • External USB Ports: 2x USB Ports
  • Standard: USB 3.0
  • Data Transfer Rate: Up to 5.0 Gbps
  • Model #: SY-PEX20081
  •  
  • $15.99 –
  • $7.99 Shipping
1X PCI Express PCI-E to Parallel port DB25 LPT Printer Card Adapter ASIX chip AX99100 TXB072
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  • $16.99 –
  • 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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  • $35.99 –
  • Free Shipping
  • $35.50 - $35.99
SerialGear PCMCIA Single Port RS-422/485 Card with Isolation and Port Protection
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  • $120.98 –
  • $3.99 Shipping
PCI-Express to PCI Adapter Card PCIe to Dual Pci Slot Expansion Card USB 3.0  Add on Cards Converter TXB024
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  • $33.99 –
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PCIe to Dual PCI Adapter Card PCI Express to PCI USB 3.0  Add on Cards Converter
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  • $32.99 –
  • 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
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