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8 Port Serial PCIe Expansion Card Serial Card PCIE Converter Adapter for 17V358 Chip
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  • $118.99 
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8ports RS232 COM to PCI Express Controller expansion card DB9 Serial PCIE riser card
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8ports RS232 COM to PCI Express Controller expansion card DB9 Serial PCIE riser card

Limited time offer, ends 08/31

  • Model #: WLC78S.0803.Pallet0677
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  • $66.99 
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Marvell 88SE9125 PCIe SATA 3.0 Controller Expansion Card, PCI Express SATA Port Multiplier Add On Storage Adapter Card
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  • $40.89 
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RS232 Serial Port & DB25 Printer Parallel Port to PCI-E Card Adapter Converter
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RS232 Serial Port & DB25 Printer Parallel Port to PCI-E Card Adapter Converter

Limited time offer, ends 09/06

  • Model #: IW-ADD-convert-84
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  • $34.99 
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PCIe 1X to 2-Port USB3.0 Expansion Card with IDE 4Pin Power Port, 5Gbps High Speed PCI Express Riser Adapter Built-in NEC720200 Controller Chip
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  • $36.59 
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JAENFONG  Dual 2.5 Gigabit M.2 M+B Key Ethernet Network Expansion Card
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  • $87.25 
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4 Ports SATA3.0 6Gbps to PCI-Express Expansion Card 88SE9215 Chipset for Marvell
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  • $64.33 
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SUNIX 2-port RS-232 Universal PCI Serial Board Model SER5037A
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SUNIX 2-port RS-232 Universal PCI Serial Board Model SER5037A
  • Type: PCI to Serial Port Card
  • Specifications: Serial Communication -Interface: RS-232 -Controller: SUNIX SUN1989 (16C950 UART Compatible) -Bus: Universal PCI 64/32bit 3.3V/5V PCI Ver 3.0, 2.3, 2.2, 2.1 -No. of Port: 2-port -IRQ & IO: Assigned by System -FIFO: 128 byte (Hardware) -Signal: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, RI -Baud rate: 50 bps to 115.2 Kbps -Data bit: 5,6,7,8 -Stop bit: 1,1.5,2 -Parity: None, Even, Odd, Space, Mark -Flow Control: None, Xon/Xoff, RTS/CTS -Protection: +/-2KV ESD protection for each signal Human Body Model (HBM) -PCB connector: DB9 Male Driver Support -Windows Client: XP/Vista/7/8/8.1 (X86/X64) -Windows Server: 2000 / 2003 / 2008 / 2008 R2 / 2012 / 2012 R2 (X86/X64) -Windows Embedded: Windows CE 4.2/5.0/6.0 XP Embedded / POSReady 2009 / POSReady 7 / Embedded System -Linux: Linux 2.4.x / 2.6.x / 3.x -DO...
  • Model #: SER5037A
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  • $138.99 
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M.2 to USB adapter M2 NGFF SSD USB 3 3.0 USB3.0 adapter  With SIM card Slot for WWAN / LTE / 4G
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M.2 to USB adapter M2 NGFF SSD USB 3 3.0 USB3.0 adapter With SIM card Slot for WWAN / LTE / 4G

Limited time offer, ends 08/31

  • Type: PCI to USB Card
  • Model #: YING-GD01-A3-07663
eShinreal External Port 8 Port PCIe x8 to SAS/SATA Expansion Card-SAS 2008 Controller
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WY5709-T2 DUAL Port 1000Mbps Gigabit Ethernet PCI-E X4 NIC Card Chipset for BCM5709C
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  • $74.23 
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CM4 to M.2 SSD expansion board for Compute Module 4 series motherboards
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  • $14.49 
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PCI-e to 4 Ports USB 3.0 Adapter PCIe 1 to 4 PCI Express Riser Card PCI-E 1X 4X 6X 8X 16X Slots to External 4 PCI-e slot Adapter PCIe Port Multiplier Card for Bitcoin Miner
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  • $74.91 
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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
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