The ThinkPad Advanced Dock (Model # 250310U) contains basic pass-through connections for notebook ports, including power pass-through. It comes with an integrated power supply. Besides all the pass-through ports the ThinkPad Advanced Dock comes with an UltraBay, PCI Express slot, 6-in-1 media card reader, On/Off switch, key lock and a slot for a cable lock.
Only 1x speed, but 16x graphics cards will work. Speeds of the interface will be between PCI and AGP bus speeds
standard length - i.e. about an inch longer than the connector. Only thin cards will fit. Many performance video cards with heat sink/fans are too thick.