A processor direct slot (PDS) is a slot incorporated into many older Macintosh models that allowed direct access to the signal pins of a CPU, similar...

memory and video boards are the most common. VESA Local Bus and Processor Direct Slot were examples of a local bus design. Although VL-Bus was later succeeded...

the LC and the SE/30 before it, the Classic II lacked an internal Processor Direct Slot, making it the second slotless desktop Macintosh after the Classic...

SE/30 has a black-and-white monitor and a single Processor Direct Slot (rather than the NuBus slots of the IIx, with which the SE/30 shares a common architecture)...

the same compact case design. With three NuBus expansion slots and a Processor Direct Slot, the IIci also improved upon the IIcx's 16 MHz Motorola 68030...

discontinued. The 5400 has one PCI slot replacing the LC-based Processor Direct Slot found in previous models, and an L2 cache slot for an optional L2 cache card...

point intensive programs. While the Macintosh Processor Upgrade did not plug into the LC Processor Direct Slot, due to power used and the space taken by the...

Color Classic has a single expansion slot: an LC-type Processor Direct Slot (PDS), incompatible with the SE slots. This was primarily intended for the...

internal Processor Direct Slot, making it the first non-expandable desktop Macintosh since the Macintosh Plus. Instead, it had a memory expansion slot. The...

5500 was introduced in early 1997. The 5260 has an LC-style Processor Direct Slot, and a slot into which an L2 cache card can be added. Common to all models...