Cabletron Systems manual Rack Mounting the 2H253-25R

Installing the Device

Rack Mounting the 2H253-25R

Proceed as follows to install the 2H253-25R into a 19-inch rack:

1.There are several mounting holes in the rackmount brackets and the bottom of the chassis so that each mounting bracket may be adjusted forward or backward to mount the device further into, or out of the rack, depending on the installation requirements. Position the rackmount brackets over the appropriate holes.

2.Locate the four 6-32 x 1/4-inch flathead screws in the rackmount kit. Use these screws to attach the rackmount brackets to the bottom of the 2H253-25R as shown in Figure 3-3.

Rackmount Bracket Screws

Rackmount Bracket

				CONSOLE					TELCO			COM	25R-2H253
											CPU		RESET
											PWR
												SPD-DPX
23	21	19	17	15	13	11	9	7	5	3	1	TX-RX
												MODE
24	22	20	18	16	14	12	10	8	6	4	2	LED
											SWITCH WORKGROUP ETHERNET FAST

Figure 3-3 Attaching the Rackmount Brackets

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3.With the mounting brackets attached, position the 2H253-25R between the vertical frame members of the 19-inch rack and fasten it securely with mounting screws as shown in Figure 3-4.

FAST ETHERNET WORKGROUP SWITCH
	LED	2	4	6	8	10	12	14	16	18	20	22	24
	MODE
	RX-TX	1	3	5	7	9	11	13	15	17	19	21	23
	DPX-SPD
	PWR
2H253-25R	CPU
	COM
	Screws
													19-Inch Rack

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Figure 3-4 Installing the Device in a Rack

3-6Installation