The RUCKUS ICX 7150-48P is one of two specific models in the ICX 7150 family that supports a software-configurable "fanless mode." When this mode is enabled via the Command Line Interface (CLI), the system fans are turned off, allowing the switch to operate silently. This feature is designed for noise-sensitive environments like classrooms or offices. Enabling this mode typically reduces the maximum supported ambient operating temperature and may limit the available Power over Ethernet (PoE) budget to prevent overheating.

A. ICX7150-48PF: This model has a higher PoE budget (740W) which generates more heat, requiring mandatory active fan cooling. It does not support the fanless mode command.

C. ICX7550-24P: The ICX 7550 is a higher-performance switch family. Its hardware design and thermal requirements necessitate active fan cooling and it does not support a fanless mode.

D. ICX7150-48ZP: This model features multigigabit ports and high-power PoE (PoH), both of which generate significant heat, making fanless operation impossible. It does not support fanless mode.

1. RUCKUS FastIron Campus Switch Configuration Guide, 8.0.95.

Section: "Enabling fanless mode"

Content: "The fanless-mode enable command is supported on the ICX 7150-48P and ICX 7150-24P devices only. When fanless mode is enabled, the system fans are turned off. The device can operate at a maximum ambient temperature of 35 degrees Celsius." This directly confirms that the ICX 7150-48P supports this feature.

2. RUCKUS ICX 7150 Switch Family Datasheet.

Section: "Table 2: RUCKUS ICX 7150 Switch Models"

Content: This table details the specifications for each model. It shows the ICX7150-48PF has a 740W PoE budget and the ICX7150-48ZP has 8x 2.5 Gbps ports with 802.3bt (90W) PoE. These higher power and performance characteristics necessitate the constant fan operation not found in the standard ICX7150-48P model.