Basically, two fine internet cable to wifi routing components for the price of one.  Used these components for just over a year without a single issue.  You can download the owner's manuals online from both Tenda and Netgear, high-quality wireless router and cable modem companies.  Items are in excellent condition, you will be pleased. 

PLEASE SEE THE NETGEAR NIGHTHAWK CM1100 CABLE MODEM SPEC BELOW:

Data Sheet | CM1100Nighthawk® CM1100 Multi-Gig Speed Cable ModemPAGE 5 of 5Package Contents• Nighthawk® Multi-Gig Speed CableModem—DOCSIS 3.1 (CM1100)• Ethernet cable• Quick install guide• Power adapterPhysical Specifications• Dimensions: 8.8 x 3.4 x 5.9 in(223.5 x 88.9 x 150 mm)• Weight: 1.00 lb (460 g)Standards• Two (2) Gigabit Ethernet ports• One (1) WAN coaxial cable connectionTechnical Specifications• Simple—CD-less installation• 32 downstream & 8 upstream QAMchannels• 2 OFDM downstream & 2 OFDMAupstream channels• Supports IPv6• DOCSIS Quality of Service (QoS)Advanced Features• Gigabit Ethernet ports support linkaggregation for true Multi-Gig speed• Backward compatible 32x8 channelbonding in DOCSIS® 3.0 mode• Supports IPv6 - Internet standard• Gigabit Ethernet ports for fasteraccess and downloadsSupport•  System Requirements• Cable broadband Internet service• Please check your cable internet serviceprovider web site for data speed tiercompatibility and to ensure it providesDOCSIS® 3.1 service, otherwise thismodem will only work as a DOCSIS®3.0 modem• Not compatible with cable bundledvoice services• Router sold separatelyWarranty• NETGEAR 1-year limited warranty