
Best selling Controller cards
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Ugreen M.2 NVME SSD to PCIe Express 3.0 x4 adapter card
The Ugreen M.2 NVME SSD to PCIe Express 3.0 x4 adapter card is a powerful solution for expanding storage space in your computer. With this controller card, you can easily connect M.2 NVMe or SATA drives and benefit from impressive data transfer rates of up to 32 Gbps. Installation is straightforward: simply insert the card into an available PCIe 3.0 x4 slot and connect it with a SATA 3.0 cable to instantly gain additional storage space. This adapter card is ideal for anyone looking to enhance system performance or efficiently utilize unused drives. It allows you to transfer large files in no time and ensures that your computer runs smoothly even with storage-intensive applications.
- Supports M.2 M and M+B keys for NVMe and SATA drives
- Data transfer rates of up to 32 Gbps for fast file transfers
- Easy installation in a PCIe 3.0 x4 slot
- Enables the use of unused drives for storage expansion.

2. Sonnet McFiver PCIe Card
Multifunction adapter card with two M.2 NVMe SSD slots, 10 Gb Ethernet, and two 10 Gbps USB-C ports, compatible with Mac, Windows, and Linux. Do you want to add SSD storage, ultra-high-speed Ethernet connectivity, or powerful USB-C ports to your setup? Or all three? Even with computers that have multiple expansion card slots, it may not be possible to install three adapter cards to obtain the necessary interfaces. Sonnet's engineers have developed a truly unique solution - the McFiver PCIe card. This professional multifunction adapter, compatible with Mac, Windows, and Linux, offers five interfaces. It is the only adapter card with two M.2 NVMe SSD slots, an RJ45 10 Gb Ethernet port, and two 10 Gbps USB-C ports, all fitting on a standard full-height PCIe card.

3. QNAP QM2-2P10G1TB
With the QM2-2P10G1TB, you can easily add two M.2 NVMe SSDs and 10GbE RJ45 connectivity to your QNAP NAS. Compared to the SATA interface, the PCIe Gen3 x 8 interface of the QM2-2P10G1TB offers higher bandwidth for faster processing speeds and quicker data access.

4. ASUS Thunderbolt EX 4
ASUS Thunderbolt EX 4 is a Thunderbolt 4 expansion card that offers 40 Gbps bidirectional bandwidth, USB4 device compatibility, and DisplayPort 1.4. It supports up to five Thunderbolt devices in a daisy chain and allows for laptop charging of up to 100 watts via USB-C.

5. Digitus PCI Express Parallel, 2/1-port
Digitus PCI Express Parallel Card, 2/1-Port, Serial/Parallel I/O, PCI Express fast data transfer, up to 1.5 MByte/sec MCS9901 chipset
The Digitus PCIe Parallel 1-Port card can be installed in a PCI Express slot, allowing you to connect an EPP/ECP parallel peripheral device to your computer. The excellent performance of the SPP/EPP/ECP parallel card features a DB25 parallel port, which is ideal for connecting printers, scanners, CD drives, memory card readers, and more. With Plug & Play, the card is easily connected to your PC, ensuring quick usage.
Highlights
- Technical details:
- Chipset: MCS9901
- 2x DSUB 9, serial interfaces, connector, UART16C450/550
- 1x DSUB 25, parallel interface
- Data transfer rate up to 1.5 Mbps
- Supports Standard Parallel Port (SPP), Enhanced Parallel Port (EPP) & Enhanced Capability Port (ECP)
- Complies with PCI Express Base Specification 1.0a
- Operating temperature: 0 °C – 70 °C
- Operating humidity: 25% – 65% RH (non-condensing)
- Supports Windows 10, 8.1, 8, 7, Vista, XP, Mac OS X, and Linux
Product type
- PCI Card
- ear category (ElektroG): relevant, category 6: small devices of IT and telecommunications technology, small devices of IT and telecommunications technology B2C
Shipping
- WEEE: 71839861 Serial/Parallel I/O, 2/1-Port, PCI Express fast data transfer, up to 1.5 MByte/sec MCS9901 chipset.

6. StarTech .com 2-Port 10Gbps USB-A & USB-C PCIe Card Adapter
With this USB 3.2 Gen 2 card, you can add a USB-C port and a USB-A port to your computer via a PCI Express slot. It allows you to expand your current system by adding two USB 3.2 Gen 2 ports to your computer, providing access to data transfer speeds of up to 10 Gbit/s per port. The USB 3.1 Gen 2 (also known as USB 3.2 Gen 2) PCIe add-in card supports multiple inputs and delivers optimal bandwidth even with connected devices operating at different speeds. Additionally, by adding a USB-C and a USB-A port to your PC, you can easily connect older, modern, and future USB devices, regardless of the USB connector type.

7. StarTech .com 2 Port 1394a FireWire PCI Express Interface Card
PCI Express Interface Card | FireWire 400 | Texas Instruments TSB82AA2
With the PEX1394A2V PCI Express FireWire card featuring 2 ports, you can add two FireWire 400 ports to your desktop PC. This TAA-compliant product meets the requirements of the US Federal Trade Agreements Act (TAA) and allows purchases under the Government Services Administration Schedule of the US government.
Future-Proof
Add FireWire to the latest computers with PCI Express slots. Continue using your older devices that would otherwise not be compatible with new computers. This allows you to connect IEEE 1394A FireWire devices such as digital cameras, external hard drives, DV camcorders, printers, and more.
Extensive Compatibility
To ensure broad compatibility, the PCIe FireWire adapter is natively supported under Windows without the need for additional drivers. The PCI Express 1394a FireWire card with 2 ports comes with a standard slot bracket and includes a low-profile bracket for installation in small form factor computers. The PCI Express to FireWire adapter is also compatible with MacOS 10.10 to 10.13.
The Choice of IT Professionals Since 1985
StarTech.com conducts comprehensive compatibility and performance testing for all our products to ensure that we meet or exceed industry standards and provide IT professionals with high-quality products. Our on-site technical advisors at StarTech.com have extensive product knowledge and work directly with our StarTech.com technicians to support our customers both before and after the sale.

8. AsRock Hyper Quad M.2 Card
Bootable M.2 RAID support
Supports up to 4 PCIe Gen3 x4 NVMe M.2 SSDs on the AMD TRX40/X399 platform and Virtual RAID on CPU (VROC) technology on the Intel X299 platform. Allows you to create a bootable RAID array with up to 4 M.2 SSDs.
All-aluminum cover & fully covered thermal pad
The 11 cm long thermal pad is able to fully cover every NAND flash on M.2 SSD, transferring heat generated by the high-speed M.2 SSD onto the aluminum cover. This extends the longevity of each device.
Adjustable cooling fan
Apart from the large aluminum cover, the 5 cm cooling fan can not only quickly dissipate heat but also lower the temperature to ensure stable performance of the M.2 SSD. Additionally, the fan speed can be adjusted via a switch located on the PCB, providing more flexible usage.
The shortest trace
The onboard four M.2 sockets are laid out on the PCB at an angle (45 degrees). The shape is optimized to keep the traces as short and direct as possible. Designed with the right trace shape to ensure each M.2 socket carries sufficient current, thus providing maximum performance and stability.
A flexible & convenient utility
A dedicated utility that works with the onboard fan switch to monitor vital information and control fan speed easily on the ASRock Hyper Quad M.2 Card.
More M.2 expansion space!
Want more ASRock Hyper Quad M.2 Cards installed for unbeatable M.2 expansion? No problem! Use the onboard switch and you can manage multiple Hyper Quad M.2 Cards effortlessly.

9. Conceptronic PCI Express Card
This 4-port SATA PCIe adapter uses a combination of Asmedia high-performance chips (ASM1061+ASM1093) to add 4 SATA ports. Each Serial ATA port supports transfer speeds up to 6Gb/s and is backward compatible with legacy SATA 1.5Gb/s or 3Gb/s drives. In addition, the card supports mode switching and can be effortlessly switched between IDE and AHCI systems.

10. Digitus PCIe card 2x USB-C + 3x USB A
The Digitus PCI Express card extends the PC with 2 USB-C ports and 3 USB-A ports. Various devices can be connected to this card, such as hard disks, DVD drives, mice, keyboards, card readers, and more.
