This is an RBS50 Satellite converted from an RBR50. It functions exactly like a regular RBS50 but has a blue top instead of grey. The last pic shows the status of the unit connected on my network. Has latest firmware v2.7.5.6 on it, and will update firmware as a normal RBS50. If you hard reset it, it stays as a RBS50. Poor external condition - yellowed and sticky, but it works flawlessly so if you're putting it out of sight, snap up a bargain!
eBay