Netgear M4300-52G (GSM4352S) - Stackable Managed Switch with 48x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 硬件手册

All ports can automatically negotiate to the highest speed, which makes the switch also 

suitable for environments with a mix of Ethernet, Fast Ethernet, Gigabit Ethernet, or 
10-Gigabit Ethernet devices. The 10/100 Mbps ports can operate in half-duplex or full-duplex 
mode. The 10G/1G ports always operate in full-duplex mode.

The switch includes the following key hardware features:

Traffic ports in various configurations:

Full 10G models. Eight, twelve, or twenty-four independent 10GBASE-T autosensing 
ports and eight, twelve, or twenty-four independent 10GBASE-X SFP+ ports

1G/10G models with 10G uplinks. Twenty-four or forty-eight 1000BASE-T 
autosensing ports, two dedicated 10GBASE-T ports, and two dedicated 10GBASE-X 
SFP+ ports

Full 10G models with combo ports. Twenty, or forty-four independent 10GBASE-T 
autosensing ports and four RJ45/SFP+ ports

Support from 128G to 960G switching fabric (all ports line-rate), depending on the model.

One out-of-band 1G Ethernet port.

One RJ-45 RS232 console port.

One mini USB console port.

One regular USB port for connection to a storage device.

One or two power supply unit (PSU) bays for small form factor modular PSUs. For the 
two-PSU bay models, the second PSU can support 1+1 redundancy.

Support for stacking on any 10G port.

Half-width or full-width model.

Full compatibility with IEEE standards:

IEEE 802.3i (10BASE-T)

IEEE 802.3u (100BASE-TX)

IEEE 802.3ab (1000BASE-T)

IEEE 802.3an (10GBASE-T)

IEEE 802.3z (1000BASE-X)

IEEE 802.3 Clause 49 (10GBASE-LR and 10GBASE-SR)

IEEE802.3ae (10GBASE Ethernet)

IEEE802.3az (Energy Efficient Ethernet)

IEEE 802.3x (Full-duplex flow control)

IEEE 802.1af (PoE)

IEEE 802.1at (PoE+)

AutoSensing and autonegotiating capabilities for all ports.

Auto Uplink technology is supported on all ports.