How To Know If I Have Free Ram Slots

Open the back side of the laptop where RAM is inside. If there is no paper label who indicates which type of module is (DDR2 or DDR3, Mhz speed, Gb), extract a single RAM from the slots, take a photo, zoom and count pins, and look how are distributed in the module (21 pins, space and 52 pins, as example, could be a DDR2 for your computer). If you know 1 slot is good, post that slot with another slot (both with ram in it) and see if your motherboard posts both sticks or just one stick. If one stick doesn't post, try that stick in another slot. If it still doesn't post, that stick is dead. If it does post, your slot is busted.

How To Know If I Have A Free Ram Slot
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When purchasing a new Server, Workstation or PC to support an expansion card one of the most important things to determine is what type of slot does the motherboard have. There are 3 types of slots that have been used for over the years: ISA, PCI, and PCI Express (PCIe). These are also the most common types of slots that computer motherboards have had for expansion cards. Let’s take a look at each of these:

ISA Slots

The ISA Slots are shown in Green in image to the right. This is the oldest slot type that is still available today. Computers with ISA slots are no longer available from major computer manufacturers, Ram PC Systems still sells industrial class systems with ISA slots.

How To Know If I Have A Free Ram Slot

PCI Slots

PCI slots were the replacment for ISA slots. The PCI Slots are shown in the Red box in the image. PCI slots come in several different versions including 5 volt and 3.3 volt slots, and 32-bit and 64-bit PCI-X slots. PCI slots are going away as well but are still available from some major computer manufacturers but they usually only offer one PCI slot. Ram PC Systems has several different systems available with 2 or more PCI slots.

PCI Express Slots