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4 DB9 serial RS232 ports pcie x1 I/O controller card with fan-out cable WCH384 chipset support low profile bracket,4 Serial Ports PCI-e Controller Card, w/ Fan-out Cable, Low Profile Bracket
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4 DB9 serial RS232 ports pcie x1 I/O controller card with fan-out cable WCH384 chipset support low profile bracket,4 Serial Ports PCI-e Controller Card, w/ Fan-out Cable, Low Profile Bracket
  • Type: PCI Express to Serial Port Card
  • External USB Ports: 4 Port
  • Specifications: 4 DB 9 serial rs232 ports pcie x1 I/O controller card with fan-out cable WCH384 chipset support low profile bracket
  • Package Contents: 1 x Powered RS-232 4-Port PCIe Card •1 x Driver CD •1 x User Manual •1 x Low Profile
  • Model #: NTRAC100091W
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  • $39.98 
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  • $25.99 - $39.98
Lsi00214 (9750-8I Sgl) 8 Internal Ports Pci-E Low-Profile Sata/Sas Raid Controller
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  • $225.00 
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Wireless-AC Wifi Bluetooth Card BCM94360CS2 For MacBook Air 13'' A1465 A1466 DG
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  • $39.98 
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  • $17.99 - $39.98
Sonnet DuoModo xMac mini Module
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Supermicro RSC-R1U-E16R Riser Card
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Supermicro
Supermicro RSC-R1U-E16R Riser Card
  • Type: Riser Card
  • Compatibility: Super Micro X7DWT-INF Motherboard
  • Specifications: Expansion Slots:1 x PCI Express x16 Form Factor:1U Host Interface:SXB2
  • Model #: RSC-R1U-E16R
  • $28.99
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  • $28.33 
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Supermicro AOM-S3108-H8 8-port 12Gb/s mezzanine module
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  • $99.00
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  • $49.99 
  • Save: 49%
  • Free Shipping
Sonnet McFiver Multifunction PCIe Card,2x SSD Slots,1x 10GbE Port,2x USB-C Ports
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  • $349.99 
  • $7.85 Shipping
Supermicro PCI Express Riser Card
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Supermicro
Supermicro PCI Express Riser Card
  • Type: Riser Card
  • Compatibility: Supermicro: SuperServer 6026T-URF4+ SuperServer 2026T-URF4+
  • Specifications: Expansion Slots:1 x PCI Express x8 2 x PCI Express x4 Form Factor:2U Plug-in Card Host Interface:PCI Express x16
  • Model #: RSC-R2UU-2E4E8R
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  • $79.49 
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Supermicro AOC-S2308L-L8i 8-Port SAS/SATA PCIe RAID Card Full Height
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  • $49.99 
  • Free Shipping
SYBA 4 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SY-PEX15066
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SYBA 4 Port RS-232 DB9 Serial M.2 B+M Key Controller Card - SY-PEX15066
  • Type: RS-232 DB9 Serial M.2 B+M Key Controller Card
  • External Ports: 4 x Serial Ports
  • Internal Ports: 1 x M.2 B+M Key
  • Operating Systems Supported: Windows 7, 8, 10, Linux Kernal 2.6.15 , Android 1.x-5.x
  • Model #: SY-PEX15066
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  • $43.99 
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SYBA SY-PEX15019 RS-232 Serial 8-Port PCI-Express Card
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SYBA SY-PEX15019 RS-232 Serial 8-Port PCI-Express Card
  • Type: PCI Express to Serial Port Card
  • External Ports: 8 x Serial Ports
  • Data Transfer Rate: Serial Port: Up to 1 Mbps
  • Operating Systems Supported: Windows 2000, 2003 Server, XP 32/64-bit, Vista 32/64-bit
  • Model #: SY-PEX15019
USB 3.2 Gen 2 (10 Gbps) 1-Port Type-C M.2 22x60 B+M key Controller Card
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USB 3.2 Gen 2 (10 Gbps) 1-Port Type-C M.2 22x60 B+M key Controller Card
  • Type: PCI Express to M.2 Card
  • Internal USB Ports: 1x USB Port
  • Parts: 3 Years
  • Labor: 3 Years
  • Model #: SY-ADA20232
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  • $31.99 
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PCI-Express x4, 4-Port Gigabit Ethernet RJ45 Card. Support Wake-On-LAN and RealWoW! Remote Wake-Up
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  • $45.49 
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IO CREST 2 Port RS-232 DB9 Serial M.2 B+M Key Controller Card
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  • $33.99 
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SYBA M.2 PCIe I/F NVMe SSD to U.2 (SFF-8639) 2.5-Inch SSD Adapter with Cable Model SI-ADA40123
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SYBA M.2 PCIe I/F NVMe SSD to U.2 (SFF-8639) 2.5-Inch SSD Adapter with Cable Model SI-ADA40123
  • Type: M.2 PCIe I/F NVMe SSD to U.2 (SFF-8639)
  • Operating Systems Supported: Windows 7/8/8.1/10 64-Bit, UEFI 2.3.1 or later
  • Specifications: Built in M.2 M-Key Recep5cal Connector PCI Express Base Specifica5on Rev 3.0 NVM Express 1.2a 3.3v, 5A maximum output current Short Circuit Protec5on Thermal Shutdown Protec5on Windows 7/8/8.1/10 64-Bit
  • Package Contents: 1 x Adapter 1 x Copper Nut 1 x M3x3 Screw, M3x5 Screw 2 x Washers 1 x SFF-8643 to U.2 Adapter Cable
  • Model #: SI-ADA40123
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  • $39.99 
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SYBA U.2 (SFF-8639) to M.2 M-Key NVMe Adapter Model SI-ADA40121
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SYBA U.2 (SFF-8639) to M.2 M-Key NVMe Adapter Model SI-ADA40121
  • Type: U.2 (SFF-8639) to M.2 M-Key NVMe
  • Operating Systems Supported: Windows OS
  • Specifications: IOCrest SI-ADA40121 provides the capability to utilize an Intel 750 Series 2.5" NVMe SSD (SFF-8639). Comes with PCIe 3.0 x4 (12 Gbps) bandwidth that can be used if motherboard comes with M.2 M-key slot. Otherwise M.2 adapter will be needed.
  • Weight: 0.40 lbs.
  • Model #: SI-ADA40121
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  • $36.99 
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Asus R541NA Series 15.6" Wifi Wireless Bluetooh Card WCBN611LH-AD 0C011-00061A00
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  • $19.99 
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SAS9201-8I LSI 6Gbps PCI Express 2.0 x8 9201-8i 8-Ports SAS/SATA Controller Card
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Refurbished SAS9201-8I LSI 6Gbps PCI Express 2.0 x8 9201-8i 8-Ports SAS/SATA Controller Card
  • Type: buffer_22811
  • Data Transfer Rate: 6Gbps
  • Parts: 30 Days
  • Labor: 30 Days
  • Model #: SAS9201-8I
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  • $33.35 
  • Free Shipping
IO CREST RS-232 + RS-422/485 DB9 Serial M.2 B+M Key Controller Card
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  • $33.16 
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SYBA 2 Port Type-A USB 3.1 10Gbps Card Model SI-PEX20208
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SYBA 2 Port Type-A USB 3.1 10Gbps Card Model SI-PEX20208
  • Type: PCI Express to USB Card
  • External USB Ports: 2x USB Ports
  • External Ports: 2 Type-A USB Ports
  • Data Transfer Rate: Up to 10 Gbps
  • Model #: SI-PEX20208
Sonnet Sonnet SSD M.2 2x4 PCIe Card #FUS-SSD-2X4-E3S
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  • $169.99 
  • $7.85 Shipping
TRIPP LITE P778-010 10FT USB / PS2 KVM SWITCH CABLE
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  • $33.19 
  • Free Shipping
Intel I210T1BLK Ethernet Server Adapter I210
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  • $74.57 
  • Free Shipping
SYBA IOCrest USB 3.1 MultiPort Card Model SI-PEX20189
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SYBA IOCrest USB 3.1 MultiPort Card Model SI-PEX20189
  • Type: PCI Express to USB Card
  • External USB Ports: Type-A and Type-C ports
  • Internal Ports: PCI-Express 2.0 Dual-Lane (x4 form factor)
  • Standard: USB 3.1
  • Model #: SI-PEX20189
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  • $18.99 
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BCM94331CD Mini PCI-E WiFi Bluetooth Card for Apple iMAC A1418 A1419
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  • $13.99 
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GIGABYTE AORUS Gen4 AIC Adaptor GC-4XM2G4, Easy One Click RAID, Full PCIe 4.0 Design, 4 x PCIe 4.0/3.0 M.2 Slots
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GIGABYTE AORUS Gen4 AIC Adaptor GC-4XM2G4, Easy One Click RAID, Full PCIe 4.0 Design, 4 x PCIe 4.0/3.0 M.2 Slots
  • Type: PCI Express to M.2 Card
  • External Ports: Extended to 4 x M.2 Internal Connectors (Socket 3, M Key, Type 2242/2260/2280/22110 PCIe x4 SSD Support) Support for RAID 0, RAID 1, and RAID 10* * Supported RAID levels vary by platform.
  • Internal Ports: PCI Express x16, Compatible with PCI Express x16 and x8 Slots (If the adpater card is installed in a x8 slot, only the M2_1 and M2_2 connectors can be used.)
  • Standard: PCIe 4.0
  • Model #: GC-4XM2G4
RealTek RTL8188CE 802.11b/g/n  Wireless N PCI Express Half Height Mini WIFI WLAN
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  • $15.49 
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Genuine Dell Optiplex 9030 AI Intel Wifi Wireless Bluetooth Card 4.0 Card GPFNK
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  • $26.99 
  • 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
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