There are two different probe holders that are available for the Microlab 600.  For all configurations of the instrument, except the Disposable Tip Hand Probe (ML625-DTHP), these utilize the Accessory Holder which is compatible with the Concorde CT Hand Probe and the Dual Push Button Hand Probe.   The Cable Management System is used exclusively with the Disposable Tip Hand Probe.  The Microlab 600 instruments will come with the appropriate probe holder.