Netgear GS750E
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| 48‑Port Gigabit Plus Switch | |
 | |
| Homepage | Product page |
|---|---|
| 3rd Party Firmware | |
| dd-wrt | Incompatible |
| OpenWrt | Supported |
| Tomato any flavor | Incompatible |
| Gargoyle | Status Unknown |
| Platform | |
| Brand • Model • Rev | Netgear GS750E |
CPU1  | Realtek RTL8393M |
| CPU1 Type | MIPS 34Kc |
| CPU1 Speed | 700 MHz 32-bit |
| Bus | 32-bit |
| Flash1 Chip | Macronix MX25L6433F |
| Flash1 Size | 8 MiB 8,388,608 B <br />65,536 Kib <br />8,192 KiB <br />64 Mib <br />0.00781 GiB <br /> (NOR) |
| RAM1 Size | 128 MiB 134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> (DDR3) |
| RAM1 Chip | Nanya NT5CC64M16GP-DI |
| ETH chip1 | Realtek RTL8393M |
| Switch | Realtek RTL8393M |
| Ethernet Port Count | 48-1GbE |
| Ethernet connector | 8P8C |
| Wired Standard | IEEE 802.3i/3u/3ab |
| Auto-MDIX | supported |
| Jumbo frame | yes |
| Switch Class | managed |
|
Ethernet OUI: none specified | |
| Expansion IF types | SFP |
| SFP ports | 2 |
| Stock bootloader | U-Boot |
| Power | 100-240 VAC ~ 50/60 Hz, 0.7 A |
| Connector type | C13 |
| Serial Port (UART) | yes, 3.3V TTL, (115200 8N1) |
| Other | |
|
| |
|
Flags: Smart switch, 2x SFP Combo ports, SNMP, LACP, MSTP, RSTP, heatsink, metal case | |
| 3rd Party Firmware Support |
OpenWrt • (List | Dev | DLs) |
| Retail | |
| Availability | End of Life |
| End of Life date | 2022 |
| ASIN |
B01KJ58ZWA  |
For a list of all currently documented Realtek chipsets with specifications, see Realtek.
For a list of all currently documented Netgear devices with specifications, see Netgear.
Flashing
 | NOTE: During configuration or flashing a device, the only things that should be hooked to the device is the computer and power. |
Flashing OpenWrt
 | This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 8MB FLASH / 64MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 8/64 warning for details. This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation. This means that you will not be able to install many packages, and that you might experience crashes due to OOM situations more or less often. See OpenWrt on 8/64 devices what you can do now. |
Target: realtek
Subtarget: rtl839x
Package architecture: mips_24kc
Supported Since Commit
Support started version: 23.05.0
Current supported version: 25.12.1
Subtarget: rtl839x
Package architecture: mips_24kc
Supported Since Commit
Support started version: 23.05.0
Current supported version: 25.12.1
LAN Hardware: Realtek RTL8393M
WLAN Hardware: none
Installation method(s):
See devicepage
Recovery method(s):
TFTP generic, Serial
Comment:
There are v23.05.x images, but networking is broken. See https://github.com/openwrt/openwrt/issues/13585 (Is this still true?)
WLAN Hardware: none
Installation method(s):
See devicepage
Recovery method(s):
TFTP generic, Serial
Comment:
There are v23.05.x images, but networking is broken. See https://github.com/openwrt/openwrt/issues/13585 (Is this still true?)
| git • >> |
|---|
realtek: add support for Netgear GS750E This is an RTL8393-based switch with 48 RJ-45 and 2 SFP ports. Hardware -------- SoC: Realtek RTL8393M RAM: 128MB DDR3 (Nanya NT5CC64M16GP-DI) FLASH: 8MB NOR (Macronix MX25L6433F) ETH: 48x 10/100/1000 Mbps RJ-45 Ethernet SFP: 2x SFP BTN: - 1x Reset button LEDS: - 50x Green-Amber leds: lan/sfp status - 1x Green led: power (Always on) UART: - 115200-8-N-1 (CN3, pin-out on PCB) Everything works correctly except for the 2 SFP ports that are not working unless you enable it every boot in U-Boot with the command: rtk network on Installation ------------ You can install Openwrt using one of the following methods. Warning: flashing OpenWrt will delete your current configuration. Warning 2: if the -factory.bix file is not available anymore, you must follow Method 2. Method 1: Check the firmware version currently running on your switch. If you are running FW V1.0.1.10 or greater, you have to download the firmware V1.0.1.8 from Netgear website and then flash this version. When the switch restarts, it should be on version V1.0.1.8. Now you can get the OpenWrt -factory.bix file and then flash it using the OEM web interface. Method 2 (requires the UART connection): Boot the -initramfs-kernel.bin image from U-Boot with these commands: rtk network on; tftpboot 0x8f000000 openwrt-realtek-rtl839x-netgear_gs750e-initramfs-kernel.bin; bootm; And then flash the -sysupgrade.bin file from OpenWrt. Revert to stock --------------- Get the stock firmware from the Netgear website and flash it using the OpenWrt web interface. Remember to not keep the current configuration and check the "Force upgrade" checkbox Once reverted to stock the firmware could complain in the UART console about mtdblock3 and/or mtdblock4 not being mounted correctly but it seems to work anyway without any problems. Sample error: mount: Mounting /dev/mtdblock4 on /mntlog failed: Input/output error If you want to get rid of these error messages you can boot the -initramfs-kernel.bin image from U-Boot with these commands: rtk network on; tftpboot 0x8f000000 openwrt-realtek-rtl839x-netgear_gs750e-initramfs-kernel.bin; bootm; And then erase the corresponding partitions using the command: For mtdblock3: mtd erase jffs2_cfg For mtdblock4: mtd erase jffs2_log Now you can reboot the switch and the errors should be gone Note ---- To get the SFP ports fully working, all the right GPIOs must be found. In the GPL sources I found these: - GPIO_14: SFP_TX_DIS1; - GPIO_19: SFP_TX_DIS0; |
