IBM ThinkPad Dock II Hardware Maintenance Manual page 48

Product overview
Feature
Standard memory
Optional memory
Bus architecture
Graphic memory
chip
CMOS RAM
I/O port
Internal modem
(continued)
44
R50/R50p, R51 Series
Description
R51 series:
v 128 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 256 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 512 MB DDR SDRAM SO-DIMM
(PC2700) card × 1
v 128 MB DDR SDRAM SO-DIMM
(PC2700) card
v 256 MB DDR SDRAM SO-DIMM
(PC2700) card
v 512 MB DDR SDRAM SO-DIMM
(PC2700)
v 1 GB DDR SDRAM SO-DIMM (PC2700)
(maximum of 2048 MB)
v 400 MHz PSB (Processor System Bus)
v 333 MHz DDR (Double Data Rate)
SDRAM (Synchronous DRAM) (PC2700)
v HUB link
v PCI bus
v LPC bus
R50 series:
v 32 MB DDR SDRAM (ATI M7-32)
v 32 MB DDR SDRAM (ATI M9-32)
R50p series:
v 128 MB DDR SDRAM (ATI M10 GL-128)
R51 series:
v Intel 855GME
(total video memory: UMA, 64 MB)
v 32 MB DDR SDRAM (ATI M7-32)
v 32 MB DDR SDRAM (ATI M9-32)
v 242 bytes
v External monitor connector
v Stereo headphone jack
v Monaural microphone jack
v Infrared port
v Parallel connector
v Docking connector
v RJ11 connector
v RJ45 connector
v TV-out connector (S-Video)
v Video-in connector
v Universal serial bus (USB) 2.0 connector
× 2 (compatible with USB 1.1 and 2.0)
v IEEE 1394 connector (some models)
v 56.6 Kbps