There are four hardware versions of the G450 Branch Gateway, referred to as G450 Branch Gateway 1.x, G450 Branch Gateway 2.x, G450 Branch Gateway 3.x, and G450 Branch Gateway 4.x. 1.x and 2.x refer to the hardware suffix of the Branch Gateway that is printed on the label displayed on the rear of the chassis. The differences between the two versions are minor, and include slightly different front panels, and different placement of components on the main boards. The front panels in versions 2.x, 3.x, and 4.x are identical, with minor differences with version 1.x.
On the G450 version 1.x, the RST button is to the left of the ASB button.
On the G450 versions 2.x, 3.x, and 4.x, the RST button is above the ASB button.
Figure : 1. The G450 1.x front panel ports and slots
Figure : 2. The G450 2.x, 3.x, and 4.x front panel ports and slots