4GB DDR3 1333 U-DIMM 1RX8
Transcend Part# TS512MLK64V3H
RAM Modules – RAM Module - 1.50 V Memory Voltage - DDR3 SDRAM - CL9 - 4 GB Memory Size - DIMM - 1333 MHz Memory Speed - Non-ECC - 240-pin Pins - Unbuffered - 1.2" Width - 5.3" Length - 50 mil Thickness
4GB DDR4 2400 SODIMM SRX8
Transcend Part# TS512MSH64V4H
RAM Modules – TAA Compliant – RAM Module - 1.20 V Memory Voltage - DDR4-2400/PC4-19200 - DDR4 SDRAM - CL17 - 4 GB Memory Size - SoDIMM - 2400 MHz Memory Speed - 260-pin Pins - Unbuffered - Taiwan - 1 x 4GB Modules
4GB SODIMM Memory Module DDR3
Corsair Part# CMSO4GX3M1A1333C9
RAM Modules – RAM Module - DDR3-1333/PC3-10600 - DDR3 SDRAM - CL9 - 4 GB Memory Size - SoDIMM - 1333 MHz Memory Speed - Notebook - Non-ECC - 204-pin Pins - Unbuffered - Notebook - 1 x 4GB Modules - Lifetime