The Spectravideo SV 328 was the ancestor of the Spectravideo MSX SV-728 (it had the same case and almost all its features) and the successor of the SV-318.
This computer wasn't a MSX machine, even though its hardware design was almost the same as MSX computers. Its Microsoft Extended Basic was also close to the MSX Basic but not fully compatible. The cartridge slot couldn't use MSX cartridges. However, Coleco cartridges could run thanks to an optional card.
The SV-328 ran CP/M 2.2 or 3.0 when connected to the 5.25" 360 KB floppy drive unit. Several well known CP/M software were adapted to the SV328; i.e. dBase II and WordStar.
Several expansion devices were developed for this computer. Among them, the SV-605B expansion box which offered a 10 MB hard disk, two 5.25" DSDD floppy drives, one Centronics port and six expansion slots.
Some other peripherals were released: Graphic Tablet, 80-column card, 1200/75 modem card, RS232 interface.