bsm31-1974-23 palm sw (trackball assy) for toshiba aplio/aplio xg/famio 8/nemio/nemio xg/xario/xario xg (alternate p/n: bsm31-3075, bsm31-4618-25, bsm31-4618-04 & bsm31-5314-03 - specify 12 or 14 pin connection)