lenovo w530

Howdy. I would like to upgrade the memory in an older Lenovo Thinkpad W530 (LENOVO 2436CTO ThinkPad W530). This is what is currently installed: 7760 Megabytes Usable Installed Memory Slot 'ChannelA-DIMM0' is Empty Slot 'ChannelA-DIMM1' has 4096 MB (serial number 149C7F66) Slot...