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Negotiated Link Speed only 1.5 Gb/s

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HP ProBook 4530s, MacBook Pro 8,1 13", MacBook Air 5,2 13", MacBook Pro 8,2 15", MacBook Pro 5,2 17"
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This is well documented bug with SATA 3 drives and Nvidia MPC79 chipset used in some Macs. I have Kingston v300 SSD in MBP 17" 2009 and even though chipset supports SATA 2 speeds, the SSD works only as SATA 1 drive, which is really annoying, it's still pretty fast compared to stock 7200rpm drive, but still, it should be twice as fast. Has anyone ever found some solution?
 
Sorry its a very old thread, may be the answer is not helpful.

I have same controller on imac 24 early 2009 , same issue of negotiated speed 1.5 after ssd upgrade into the hdd/cd caddy. nothing worked except upgrade to el captian fixed it. why ? i have no idea but its faster.
 

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Hi malik

i am struggling with same issue.if you wouldn't mind, Please let me know the make and model of ssd you are using and do you have this in the HD location or the SuperDrive cable

thanks
 
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