ZTE MC888 Ultra 5G Router Modification Instructions

Warranty Notes

• This modification voids all warranty rights with the manufacturer and therefore the unit shall not be returnable under warranty.
• Do not open the unit once modified, as doing so may damage the new antenna outputs. Any attempt to open the unit causing damage to the outputs will result in a chargeable repair.

Antenna Notes

• This modification has converted the internal antennas to external antennas.
• The internal antennas are no longer functional as they are now converted for external antenna use.

5G SA/NSA

• SA (Stand-Alone): This means the mast and router can negotiate a link without needing a 4G connection first. The router must be SA capable, and the mast must have its own dedicated 5G infrastructure “SA” not dependent on 4G.
• NSA (None Stand-Alone): This means the router and the mast must negotiate a 4G link before it can establish its 5G link. Once connected to 5G, it will still require the 4G link to maintain the 5G connection.

Software Configuration

• There have been no firmware/software adaptations to the router during the modification process.
• During testing of the modification, the router will have been restored to factory default settings; any settings that were previously on the unit have been lost.
• If your unit has factory antenna outputs, please ensure within the router login page that "use internal antenna" is selected. This ensures the use of the modified antenna outputs. (Some routers do not have this option available)

Port Frequency Band Ranges

(Please refer to the router's specifications and your local network band support list for compatibility)

4G Ports:

• Low Band: 700~900Mhz (Bands 8,20,19,6,5,18,26,27,14,13,17,28,68,12,85,71,31,72,73,88,87,29,67)
• Mid Band: 901~2100Mhz (Bands 70,25,2,9,3,24,21,11,74,32,75,76)
• High Band: 2101~3500Mhz (Bands 22,7,15,16,69,30,23,66,65,1,10,4)

5G Ports:

• 5G: 700~2900Mhz (Bands N1, N12,N2,N20,N25,N28,N3,N5,N50,N51,N65,N66,N7,N70, N71,N74,N8)
• 5G: 3300~5000Mhz (N77,N78,N79)

Configuration Diagrams

This modification allows the use of the new external inputs in the configurations shown in the diagrams below:

Full Mod - 4G Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with external connections for two 4G High Band 2x2 MIMO Antennas.

Full Mod - 5G NSA Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with external connections for two 5G 2x2 MIMO Antennas and two 4G High Band 2x2 MIMO Antennas.

Full Mod - 5G SA Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with external connections for two 5G 2x2 MIMO Antennas.

Part Mod - 4G Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with external connections for two internal 4G High Band 2x2 MIMO Antennas.

Part Mod - 5G NSA Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with external connections for two internal 5G 2x2 MIMO Antennas and two internal 4G High Band 2x2 MIMO Antennas.

Part Mod - 5G SA Configuration

Diagram showing the ZTE MC888 Ultra 5G Router with an external connection for one 5G 2x2 MIMO Antenna.

Contact Information

For any other enquiries, please contact Router-Mods LTD:

• Email: enquiries@router-mods.co.uk
• Web: www.router-mods.co.uk