as a replacement ROM for the Plus 1, of whose 8 KB utility ROM only 3 KB had been used, thus providing an opportunity for a more comprehensive ROM to be developed. The AP2 added ROM management commands familiar from the BBC Master series, support for various sideways RAM products from PRES, disc formatting and verification utilities for different ADFS versions, a command to disable the Plus 1 entirely, and improvements that made tape loading more reliable in "high memory" screen modes. Slogger Rombox Plus Following on from Slogger's earlier Rombox product an expansion similar in profile to the Plus 1 but offering eight ROM sockets and propagating the expansion connector to other units the Rombox Plus was positioned more directly as a competitor to the Plus 1 in that it offered two cartridge slots and a Centronics print port alongside four ROM sockets. Priced at £49.95, the unit was mostly compatible with cartridges designed for the Plus 1 although one reviewer reported physical issues with some expansion cartridges, suggesting some manufacturing inconsistencies given other users' more positive experiences, but indicated that it was still "worth considering as an alternative to the Plus 1". One review reported that the Cumana Electron Filing System cartridge had an edge connector that would not physically fit inside the slot in the Rombox Plus unit; this along with a perceived lack of robustness of the case being their only major reservations about the product. The product's support for utilising 8 KB RAM devices as a printer buffer, with buffer management provided by the built-in EPROM, was noted as a particular advantage over the Plus 1. Slogger Remote Expansion and Plus 2 In early 1989, Slogger announced its "remote expansion" (RX) system for the Electron, providing a separate case with power supply to house expansions and disc drives, able to support the weight of a monitor or television. Intended for the RX system, the Plus 2 offered two ROM cartridge slots compatible with the Plus 1, three ROM sockets, and RS423 and user port capabilities. Software Bargains Plus 1 In mid-1989, Software Bargains announced an expansion providing different levels of Plus 1 functionality, offered as a bare printed circuit board without casing and in three different variants: the basic model offered one cartridge port and was bundled with View and Viewsheet cartridges for £29.95; an extended model offered one cartridge port and a printer port