Review on 🔌 StarTech.com 6-inch USB 3.0 Extension Cable (USB-A Male to USB-A Female) - USB 3.1 Gen 1 (5Gbps) Port Saver - Black (USB3EXT6INBK), 0.5 ft by Adam Jenkins

I bought this to use with a 2TB Fantom Greendrive USB 3.0 hard drive in combination with the short 90cm USB 3.0 cable that came with the drive. Unfortunately, the data transfer speed I observed when using this extension cable was the same as when using a regular old USB 2.0 cable. The following test results are from CrystalDiskMark v.3 in three configurations with the same drive: 1. Using the original USB 3.0 cable that came with the drive, 2. Using the original USB 3.0 cable along with this extension cable, and 3. Using it a normal USB 2.0 cable. I will be returning this cable and trying a longer 3.0 cable instead of an extension. --------------------------------------------------------------- - -----------------------one. With original USB 3.0 cable ------------------------------------------------------ --- --------- ---------------------------------- -----* MB /s = 1,000,000 bytes/s [SATA /300 = 300,000,000 bytes/s] Sequential Read: 109.994 MB/s Sequential Write: 107.701 MB/s 512 KB Random Read: 46.013 MB/ss 512 KB Random Write: 56.913 MB/s 4 KB Random Read (QD=1) : 0.636 MB/s [155.3 IOPS] 4 KB Random Write (QD=1) : 1.399 MB/s [341.6 IOPS] 4 KB Random Read (QD= 32) : 0.669 MB/s [163.2 IOPS] 4 KB Random Write ( QD=32) : 1.246 MB/s [304.2 IOPS] Test : 500 MB [U: 53.2% (991.9/1863 ,0 GB)] (x6) Date: 2012-10-29 18:36:21 Operating system: Windows 7 Professional SP1 [6.1 Build 7601] (x64)----------- ------- ----------------------- ------------------- - ------- --2. With USB 3.0 extension cable--------------------------------------------- ------- ------------- ------ ------* MB/s = 1,000,000 bytes/s [SATA/300 = 300,000,000 bytes/s] Sequential Read: 40.624 MB/s Sequential Write: 39.870 MB/s 512 KB Random Read: 26.887 MB 512 KB Random Write: 38.606 MB/s 4 KB Random Read (QD=1 ) : 0.626 MB/s [152.9 IOPS] 4 KB Random Write (QD=1) : 1.353 MB/s [330.4 IOPS] 4 KB Random Read (QD=32) : 0.655 MB/s [159.9 IOPS] 4 KB Random Write (QD=32) : 1,308 MB/s [319.4 IOPS] Test : 500 MB [U: 53.2% (991.9/1863.0 GB) ] (x6) Date: 2012-10-29 18:46:30 OS: Windows 7 Professional SP1 [6.1 Build 7601] (x64)---------- ------------ ----------- ----------------------- ----------3. With USB 2.0 cable----------------------------------------------------- ------ ------------------------ -------------------- -----* MB/s = 1,000,000 bytes/s [SATA/300 = 300,000,000 bytes/s] Sequential Read: 40.025 MB/s Sequential Write: 39.569 MB/s 512 KB Random Read: 26.826 MB 512 KB Random Write: 39.362 MB /s 4 KB Random Read (QD=1): 0.622 MB/s [151.8 IOPS] 4 KB Random Write (QD=1): 1.452 MB/s [354.4 IOPS] 4 KB Random Read (QD=32 ): 0.659 MB/s [160.9 IOPS ] 4 KB Random Write (QD=32): 1.314 MB/s [320.8 IOPS] Test: 500 MB [U: 53.2% (991.9/1863, 0 GB)] (x6) Date: 2012-10-29 6:57 :54 OS: Windows 7 Professional SP1 [6.1 Build 7601] (x64) UPDATE: I purchased this USB 3.0 cable to download directly from a StarTech. com USB3SAB6 drive to operate SuperSpeed USB 3.0 6ft Cable A to B - M/M Much better performance than extension cables. ----------------------- -------------- ------ ------- -------- With Startech 6ft A-to-B USB 3.0 Cable ----- ------ ------------------ ------------------ ------------------ * MB/s = 1.000000 bytes/s [SATA/300 = 300,000,000 bytes/s] Sequential Read: 109.983 MB/s Serial Write: 107.723 MB/s Random Read 512 KB: 47.779 MB/s Random Write 512 KB : 57.530 MB/s Random Read 4 KB (QD = 1) : 0.639 MB/s [155.9 IOPS] Random Write 4 KB (QD = 1) : 1.463 MB/s [357.3 IOPS] 4 KB Random Read ( QD=32) : 0.680 MB/s [166.1 IOPS] 4 KB Random Write (QD=32) : 1.311 MB/s [320.0 IOPS] Test : 500 MB [U: 53.2% (991.9 /1863.0 GB)] (x6) Date: 2012-10-31 14:25:30 Operating system: Windows 7 Professional SP1 [6.1 Build 7601] (x64)