Can you use both ethernet ports at the exact same time?

Depends on your ISP. The company I work for gives you 2 public IP addresses and you can get any combo of 2 computers, 1 computer and one router or 2 routers. You WILL NOT however get full speed on both at the same time but not half either. The modems we use now have only one ethernet port but if you hook up a simple switch you get both IPs through it. But ONLY 2.

Will this support xfinity extreme 1200mbps ? it's not on the supported device list.

The Arris S33 is a DOCIS 3.1 capable device 32 x 8 rated for speeds up to 2.5 Gb. While the modem is indeed on Xfinity supported device list (check detailed discussions on dslreports.com), what matters is your router. Ensure you have a router capable of 1+Gb speeds.

Does this modem support snmp?

NO. I wish that wasn't the case, but we have no SNMP access. No Arris home modems support user facing SNMP. The cable provider has management, but SNMP isn't exposed to the home network. From Arris: "SNMP (Simple Network Management Protocol) is not supported in Motorola Home Networking products. SNMP is included in Motorola Cable Modem and Home Gateway products, but it is intended for use only by the Cable Provider. There is no direct access to SNMP MIBs for the end-user."

Is one port for the router and the other port can be used for hardwiring a device (computer, etc) directly to modem?

The second port can only be used if connected to a separate/different IP. In other words, your ISP will have to give you 2 separate IPs. in order to use the second port.

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🚀 Unlock Multi-Gig Speeds & Own Your Connection

DUAL ETHERNET PORTS - Connect multiple devices with 2.5 Gbps and 1 Gbps ports for ultimate home office or entertainment setups.
PLUG PLAY SIMPLICITY - Activate instantly via the SURFboard Central app—no tech headaches, just pure speed.
NEXT GEN DOCSIS 3 1 TECH - Future-proof your home network with the latest standard delivering faster, more secure connections.
ISP APPROVED RENTAL FREE - Works flawlessly with Comcast Xfinity, Cox, Spectrum & more—ditch rental fees and save up to $168/year.
BLAZING MULTI GIGABIT SPEEDS - Experience up to 2.5 Gbps wired speeds for seamless 4K streaming and lag-free gaming.

The ARRIS S33 is a high-performance DOCSIS 3.1 cable modem designed for professionals demanding ultra-fast, reliable internet. Featuring a 2.5 Gbps Ethernet port plus a 1 Gbps port, it supports combined speeds up to 3.5 Gbps. Compatible with major ISPs like Comcast Xfinity, Cox, and Spectrum, it offers easy setup via the SURFboard Central app and helps users save on costly rental fees with a 2-year warranty.

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Brand	ARRIS
Series	S33
Item model number	S33
Item Weight	14.4 ounces
Product Dimensions	5.14 x 1.8 x 4.74 inches
Item Dimensions LxWxH	5.14 x 1.8 x 4.74 inches
Color	White
Manufacturer	CommScope
ASIN	B08FMSC5WZ
Date First Available	October 4, 2020

ARRIS (S33) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem For Comcast Xfinity, Cox, Spectrum & More 1 & 2.5 Gbps Ports 2.5 Gbps Max Internet Speeds 2 Year Warranty - (No Built-in Wifi)

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