I got this eSata/USB 3 enclosure for a 9 year old Dell Laptop. This N5010 Dell (8G RAM - $20 cheap upgrade from 4G) has been very productive but held back for backups by slow USB 2. Since I like to absolutely pound my computers into the ground until it's time to move on, $48 for extending the functionality seemed like a good idea. Using eSata (can't use USB 3 at same time and anyways I don't have a USB 3 port), I tried speed tests using "Crystal Disk Mark" on various drives. My main laptop drive is a Kingston 250G SSD (another cheap $50 upgrade that REALLY enhanced snappiness in loading programs - WIN 10 5-sec boot. Win 10 Pro 64-bit upgrade was free from MS and still is - get it).Short story on drive response with two different drives. A new WD Black 500G 7400RPM CMR drive was decent with about 60% of the read/write speeds of the Kingston SSD. A 4-year old Samsung 850 PRO 128GB SSD absolutely crushed the Kingston SSD in every read/write measurement by 20% - 1000% while on eSata! Blew me away. I tested other hard/thumb/flash drives but the WD and Samsung PRO were the most telling as I expected the others to be slow.If you've got an old clunker and want to extend it a bit further, this is one way along with the other items pointed out. When you upgrade to Win 10, check first in BIOS to make sure your eSATA connection is enabled. Otherwise it is a royal pain to work around WIN 10 (blue screen of death crap) and get the eSATA working.One other reason I bought this is that I can then use it as a fast USB 3 drive when I hook it up to other computers that have USB 3 ports. This item allows for a bit of future proofing if you buy for an old system like mine and then upgrade eventually.I purchased this enclosure with the plan of putting a SSD in it and connecting it to my computer (tower configuration, 6Gbps buss speed) using the eSATA port. I had another 2.5" eSATA/USB enclosure (Vantec NexStar) I was testing as well. For the tests I used the same eSATA port on the computer and the same SSD in the enclosures. I used my ROM Bios to check that everything was correctly configured and that it correctly saw a SATA3 (6 Gbps) enclosure and SSD on the computer's eSATA port. As a control, I also tested an internal SATA SSD. I used CryrstalDiskMark to benchmark each configuration.As expected the internal SATA SSD was the fastest and it it approached (6 Gbps) transfer rates. The Vantec NexStar enclosure was a little bit slower than that. The MiniPro enclosure was a little less than HALF the transfer rate of the other two. My best guess is it was actually transferring at SATA2 (3 Gbps) rate instead of the advertised SATA3 (6 Gbps) rate.I also tested the USB3 port on the two enclosures as well. Their transfer rates were very similar and both approached the USB3 (5 Gbps) transfer rate.Another complaint I had about this enclosure is the cables that are included. There are many useful cables included but they are all too short except for the cable from the power supply (about 6'). If you are going to hook this enclosure to a tower computer that is sitting on the floor and you want the enclosure on your work table or desk (typically 2.5' above the floor), you will need 3' cables to get from the tower computer to your table or desk. The eSATA cable was 2' and way too short. The other cables were shorter than that. If you have a table/desk top computer or a lap top, the cables that are included might be long enough.After doing these tests, I returned the MiniPro enclosure and kept the Vantec NexStar enclosure.Not the cheapest 2.5" SSD/HD enclosure available but easy to assemble and quality components. Tried a cheaper unit but could not get it to mount. The Mini-Pro worked with and without power adapter (w/powered USB port). On/Off switch and activity light are convenient.I connect a work laptop to the device for additional storage. The laptop is moved from one location to another about once/week. After minimal (weekly connection-disconnection) use for one year, the eSATA port would not longer make proper contact so the drive could not be recognized by the host computer. For a while I could get the device connected if the cable was in "just the right position" (gently moving the cable in the port of the device), but one dare not move the device even slightly or the connection was lost. The function of the device was acceptable before this, but I would not purchase again with such a poor quality connector that after just over 50 connections the device was unusable.We are buying this practical box again in order to extend the security of our information, we have been using it to back up the development libraries, and making backups of equipment that we want to recover the information for damage to your operating system or it's components. It is practical: I can use media according to the device, the eSata or USB, with this new one we test that it is faster to make these backups, we insert a 1Tb SSD and backup in 1/10 of the time used with the normal USB with these 2 components. The Safe: It is a blond component, so far none of the ones we have bought has been damaged, it gives us a safety of its components, comfort: I can easily transfer it by the small and compact, it fits in any pocket of my pants.I make use of lots of different hard drives for recording audio, storing old files, transferring various things between different computers (including of different OS's)...so I have a goodly number of various external drive enclosures. Of them, I'd have to put the Oyen Digital Minipro up at the very top tier, along with a limited few others. The two available format choices (USB-c -backwards compatible with the appropriate adapter-, and e-SATA) are perfect for my particular situation. Drive gets recognized with no issues in both PC and Mac worlds, transfers happen smoothly and speedily, and the heat dissipation design works well, with the unit never becoming more than warm. I'm very satisfied with it. Comes with needed cables and a power adapter. The power on-off 'slide' switch is a nice extra not seen on all external enclosures.The case is metal. Good esata cable. 5V DC power supply included.I liked the storage capacity and the sizeI bought two of these units after I had previously bought one of the older USB3.1 models and found it useful. Unfortunately the two new units were supplied into the UK market with a US plug on the power adapter.Although this was supplied from the US, the product description was not clear that it would come with a US plug, after all Chinese suppliers don't supply devices with a Chinese plug into the UK market!Platte tut es (USB 3), aber das Netzteil hat einen festverbundenen US-Stecker. Platte erst seit 2 Wo im Einsatz. eSATA habe ich (noch) nicht ausprobiert.