Xebec drives were sold under the Trustor brand, and it was a full
height MFM drive inside, and then later on when they revamped the
product line, the bridge board was made simpler, sort of like the ][+
to //e - less IC's, they were marketed as the First Class Peripherals
- the Sider. The first Sider's used Half Height Miniscribe drives
before later on going to an all embedded drive manufactured for Xebec
itself, and the 1410 SASI Bridge controller was embedded within the
drive for a single piece inside the Sider case.