[2] The final additional card (a 3278 emulator) provides the communication interface to the host mainframe.

Given the small size of the character display, a review by PC Magazine concluded that the windowing features were hardly useful, and the notepads even less so.

[8] IBM considered the 3270 PC Control Program to be mainframe software, so it did not provide user-installable upgrades.

On the mainframe side, the IBM Graphical Data Display Manager (GDDM) release 4 (and later) is compatible with these two workstations.

The GDDM provided support for local pan and zoom (without taxing the host mainframe) on the PC/G and PC/GX.

[10][11] BYTE in 1984 praised the 3270 PC's 3278 emulation and color monitor, and concluded that the computer was "a must" for those seeking high-quality graphics or mainframe communications.