USB Cable Extension

Five days ago i bought a cable for USB Extension. I haven't been able to try it out until yesterday and i found out it was broken, since my USB couldn't be detected at all. I was using Slackware Linux on my office and i never thought it was Linux's fault. So i tried to test it on my colleague's laptop who's using Macintosh and Windows and they ended with the same result: the USB wasn't recognized.

Today i went back to the computer store and ask for replacement. They said that cables doesn't have warranty. I told them that in the receipt i got, every item which has low prices are guaranteed for two weeks. So she said that they will replace it, but only once and it will be a shorter cable. I said OK, so we agreed. Since it's only one time replacement, i went to the neighbor of this store which is a sub division for services. I asked them to try the new one and it failed. They gave a replacement and let me tried it but everything failed. I got a replacement three times, until finally they gave a better cable for me (i think they grab it from other product) and it was more expensive than mine, but it's definitely shorter, but it works (finally). So i decided to take those without any charges at all. It's a black one, similar with my computer's casing on my office.

Here's the result from Linux's dmesg:
usb 2-2: new high speed USB device using ehci_hcd and address 2
usb 2-2: configuration #1 chosen from 1 choice
Initializing USB Mass Storage driver...
scsi2 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 2:0:0:0: Direct-Access Kingston DataTraveler 2.0 1.00 PQ: 0 ANSI: 2
sd 2:0:0:0: [sda] 1001472 512-byte hardware sectors (513 MB)
sd 2:0:0:0: [sda] Write Protect is off
sd 2:0:0:0: [sda] Mode Sense: 0b 00 00 08
sd 2:0:0:0: [sda] Assuming drive cache: write through
sd 2:0:0:0: [sda] 1001472 512-byte hardware sectors (513 MB)
sd 2:0:0:0: [sda] Write Protect is off
sd 2:0:0:0: [sda] Mode Sense: 0b 00 00 08
sd 2:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 2:0:0:0: [sda] Attached SCSI removable disk
usb-storage: device scan complete
sd 2:0:0:0: Attached scsi generic sg0 type 0
usb-storage: waiting for device to settle before scanning
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
scsi 2:0:0:0: Direct-Access Kingston DataTraveler 2.0 1.00 PQ: 0 ANSI: 2
sd 2:0:0:0: [sda] 1001472 512-byte hardware sectors (513 MB)
sd 2:0:0:0: [sda] Write Protect is off
sd 2:0:0:0: [sda] Mode Sense: 0b 00 00 08
sd 2:0:0:0: [sda] Assuming drive cache: write through
sd 2:0:0:0: [sda] 1001472 512-byte hardware sectors (513 MB)
sd 2:0:0:0: [sda] Write Protect is off
sd 2:0:0:0: [sda] Mode Sense: 0b 00 00 08
sd 2:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 2:0:0:0: [sda] Attached SCSI removable disk
usb-storage: device scan complete
sd 2:0:0:0: Attached scsi generic sg0 type 0