32GB KIT (4 x 8GB) For HP-Compaq ProLiant Series DL4x170h G6 (ECC Registered) ML350 G6 (ECC Registered) SL160z G6 (ECC Registered) SL2x170z G6 (ECC Registered) SL335s G7 WS460c G6 Workstation Blade (ECC Registered). DIMM DDR3 ECC Registered PC3-10600 1333MHz Single Rank RAM Memory. Genuine A-Tech Brand. 32GB KIT (4 x 8GB) DIMM DDR3 ECC Registered PC3-10600 1333MHz Single Rank RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For HP-Compaq ProLiant Series. (See Compatibility List Below)