'Front' USB speed issues on 2010 Macbook Pro?

hi all,

3 weeks ago bought 15" i7 macbook pro apple store @ doncaster in melbourne, australia.

yesterday started backing blu-ray usb bdrom drive. after trial , error noticed 'front' usb port (the 1 closer headphone jack) consistently fail during rip, whereas 'back' usb port complete backup without issue. noticed port transferring data @ higher rate.

led me download xbench perform tests external hfs+ formatted drive. through xbench able confirm front usb port appears operating @ lower speed one. these results repeatable.

i'm posting ask 2 questions. firstly, has else experienced issue? secondly, please me favour , compare 2 usb ports on 2010 macbook pro xbench?

disclaimer, have replaced optical drive caddy containing intel x25-m sdd don't think lead issues i'm having.

assistance can provide.

usb port
------------
results 34.76
system info
xbench version 1.3
system version 10.6.3 (10d2094)
physical ram 4096 mb
model macbookpro6,2
drive type seagate freeagent go
disk test 34.76
sequential 39.74
uncached write 45.07 27.67 mb/sec [4k blocks]
uncached write 44.75 25.32 mb/sec [256k blocks]
uncached read 25.26 7.39 mb/sec [4k blocks]
uncached read 60.52 30.41 mb/sec [256k blocks]
random 30.89
uncached write 10.70 1.13 mb/sec [4k blocks]
uncached write 77.60 24.84 mb/sec [256k blocks]
uncached read 80.92 0.57 mb/sec [4k blocks]
uncached read 92.54 17.17 mb/sec [256k blocks]


front usb port
------------
results 27.82
system info
xbench version 1.3
system version 10.6.3 (10d2094)
physical ram 4096 mb
model macbookpro6,2
drive type seagate freeagent go
disk test 27.82
sequential 26.50
uncached write 24.92 15.30 mb/sec [4k blocks]
uncached write 25.61 14.49 mb/sec [256k blocks]
uncached read 20.56 6.02 mb/sec [4k blocks]
uncached read 43.25 21.74 mb/sec [256k blocks]
random 29.28
uncached write 11.16 1.18 mb/sec [4k blocks]
uncached write 45.55 14.58 mb/sec [256k blocks]
uncached read 80.61 0.57 mb/sec [4k blocks]
uncached read 78.97 14.65 mb/sec [256k blocks]

 

isn't 1 powered , other not? i'm willing bet 1 is.

 

Forums Macs Notebooks MacBook Pro

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless