34mm express cards will fit into a Express 54 slot

Express type expansion card for your laptop for two external S-ATA interfaces and the connection of S-ATA compliant devices. It is built into an available ExpressCard slot of your notebook has two S-ATA channels and supports Data Transfer up to 3.0GB / s.

Extension 2x S-ATA II
Installation: ExpressCard
Connection: E-ATA SATA
Compatible with 34mm and 54mm Slot
Serial ATA 2.0 standard, see
Maximum Speed: 3.0 GB / s
Supports Raid 0 and Raid 1
PCI-Express throughput

sata II express card

Sata II expresscard

Sata 2 express card adaptor
Gen2i, Gen2m SATA II Electrical Specification Rev. 1.0
ROHS compliant, FCC, CE