iFixit iMac Intel 27" Mid 2010 Dual Hard Drive Kit Brand_Cleanwirth 2V with a CAS Latency

2V with a CAS Latency of CL19

then you can still use this hub

5" SATA hard drive

Supports USB 1

iFixit iMac Intel 27" Mid 2010 Dual Hard Drive Kit Brand_Cleanwirth 2V with a CAS LatencyiFixit iMac Intel 27" Mid 2010 Dual Hard Drive Kit Key Specifications Form Factor: Dual Hard Drive Kit Warranty: 12 months Condition: New Hack a second Hard Drive into your 27" iMac The complete kit includes all the tools and cables you need to install a second drive. Just add an iMac and new hard drive or SSD of your choice. Compatible with all processor speeds, regardless of whether or not Apple offers the additional SSD option for your machine.