Name: StarTech 2 Port Flush Mount USB 3.0 ExpressCard Adapter
Brand: StarTech
SKU: STCUSB3S254F
Price: 44.99 USD
Availability: BackOrder
Rating: 3.5 (133 reviews)

StarTech 2 Port Flush Mount USB 3.0 ExpressCard Adapter

StarTech

Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped.

Temporarily On Backorder

Although this item is temporarily on Backorder, you can order it now and it will ship as soon as it arrives. Your card will only be charged once item is shipped. Estimated to Ship: 09/2025.

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StarTech 2 Port Flush Mount USB 3.0 Expr...

Upgrade your laptop with the StarTech 2 Port USB 3.0 ExpressCard Adapter. 5 Gbit/s, UASP support. Compatible with Windows. Shop now for fast connectivity!

Because high-speed data transfer is a necessity in today's digital world, the ECUSB3S254F 2-Port Flush Mount USB 3.0 ExpressCard Adapter is an essential tool for your ExpressCard-enabled laptop. This compact and durable adapter allows you to add two USB 3.0 ports to your device, enhancing its connectivity capabilities. Designed with a unique flush-mount form factor, this adapter fits seamlessly into a standard 54mm laptop ExpressCard slot. This feature allows it to remain installed even while on the move, eliminating the worry of impact damage to the card or the ExpressCard slot. The ECUSB3S254F adapter is enhanced with UASP support (USB Attached SCSI Protocol), enabling it to perform up to 70% faster than conventional USB 3.0 when paired with a UASP supported enclosure. This efficient protocol allows multiple commands to be processed simultaneously, significantly reducing wait time on data transfers and optimizing your productivity. Supporting SuperSpeed USB 3.0, this adapter facilitates data transfer rates of up to 5Gbps. It's also backward compatible with USB 2.0 (at up to 480Mbps) or USB 1.1/1.0 at up to 1.5/1.2 Mbps respectively, making it a versatile accessory for connecting both new and old USB devices. The ECUSB3S254F 2-Port Flush Mount USB 3.0 ExpressCard Adapter is compliant with USB 3.0 base specification 1.0, XHCI specification 0.95, and PCI Express specification 2.0. It also features a built-in external DC power connector for added convenience. Whether you're a mobile user who needs to leave ExpressCard adapters installed without worry, or you're looking to upgrade an older laptop with USB 3.0 connectivity, this adapter is an easy-to-use and reliable solution. It's perfect for connecting high-performance USB 3.0 external storage devices to a laptop, or for expanding your laptop's expansion capabilities with additional USB ports.

I got this for an old hp pavilion 3000 series laptop and it works perfectly to expand the amount of ports you need, the transfer speeds aren't bad either, even with a more modern usb drive.

It just works

I don't know if I damaged it by plugging in a small external hard drive without the extra USB power cable. But now I see that it gets extremely hot.  It still seems to be working fine But I find that I use it sparingly only for short periods of time now
 Perhaps my express port is damaged..

Works but gets extremely ?? hot

I use this to add usb ports to a Toughbook CF-19 Mk7 that I use in my cobbled together home office. I plugged it in to the Expresscard slot and it worked out of the box. I did not use the driver CD because I used Linux and those would be of no use to me. And yes, the cover closes and seals with the adapter in place. I can't speak to transfer speeds, because I'm using it to connect external keyboard, webcam, mouse, etc. For my use it works flawlessly.

Plug n Play On Linux

I bought this for my old Dell Latitude E6400 laptop to transfer a lot of files to a portable drive, and it preformed awesome just as Startech said it would. I was very impressed with the USB 3.0 speed. It was very easy to install, and it even came with a CD that had the needed drivers, so it only took a few minutes until I was transferring all those files at lightning speed. Before buying it, all my questions were expertly answered by a representative with Startech’s chat service. Thank you for such a great product! : )

Excellent Quality! Works Very Well and Quickly!

so it was working perfectly. I had installed the correspondant ECUSB3S254F driver coming in the CD and after a while it didn't recognize any more my external hard drives. I can plug usb sticks and everithing looks normal but with my external hard drives are not recognized any longer. Once I had this problm in the past and I've resolved it just by installing the driver again. Not this time. Quite dissapointing

not so happy would like some help trouble shooting

Driver installation was difficult. If you purchase more than one of these cards, interchanging them across different PCs wont work. Each card comes with an accompanying CD and you MUST install it's paired CD on your computer to use it. This seems to be a very sloppy method to install product drivers. The unit once installed properly does function as a set of two USB 3.0 ports. I use it to interact with a USB monitor adapter and have not had any issues for 2+ years running. The external jack seems to be broken as I was trying to run a USB3 vision camera with this card and did not have any luck. This was when I wired the external power cable to a phone charger for power. External jack is broken? All in all this product works, but it has its hiccups.

Works, but has issues.

My unity doesn't works at all and driver never could be installed. After a very poor review , the support service contacted me and in a brief chat by e-mail they fixed the problem, so my unit now work at the best . Thank you! 4 stars because the driver not installs automatically on dell 640M with xp sp3 (italian releasing). For the support 5 (FIVE!!!!!) stars!!!!

very good support service!

This card's USB 3.0 port transmits data slower than PC's USB 2.0 port.

Very slow!

I just received this earlier and it installed without issues using the drivers i took down from Startech. The speed is noticeably faster than the USB 2.0 ports and makes using this card a good choice.

Good add on for an older laptop

Arrived today!! StarTech 2 Port Flush Mount ExpressCard 54mm SuperSpeed USB 3.0 Card Adapter Up and running within seconds. The answer to all my USB problems. My lady needed to do an important report and needed to use a USB key. No problem, StarTech worked like a dream.

StarTech 2 Port Flush Mount USB 3.0 ExpressCard Adapter

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