Can more than 2 be connected to the Trio and are they wireless?

Not more than 2 (unless you daisy-chain Trios); no they are not wireless

Can i use these mics with my 8800 when connected via usb to a pc? im mostly using it this way, and not like a regular phone.

no, they have a specific Polycom plug

Need longer cables for these. What connnector/cable do they use?

Polycom cables. they sell longer cables for that microphone

Can the polycom realpresence trio 8800 ip conference phone work with 4 of the expansion mic's?

Pretty sure it cannot, by itself. It can only take up to two expansion microphones directly attached. However - Polycom recently released firmware that will reportedly let you daisy chain an add'l Trio 8800 - which would allow you to add another phone, and possibly another pair of expansion microphones to the secondary Trio. https://community.polycom.com/t5/VoIP-SIP-Phones/FAQ-Daisy-chaining-a-Polycom-Trio/td-p/102702 https://support.polycom.com/content/dam/polycom-support/products/voice/realpresence-trio/release-notes/en/polycom-trio-rn-ucs-5-8-0-aa.pdf

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Description

🎧 Elevate every meeting with unmatched audio clarity and seamless expansion!

BUILT TO LAST - Durable Polycom materials and genuine replacement parts guarantee long-term performance and peace of mind.
PLUG AND PLAY POWER - Reliable corded electric power ensures zero downtime during critical meetings.
PRECISION ENGINEERED - Designed by Polycom for perfect compatibility and easy integration with RealPresence Trio systems.
EXPAND YOUR AUDIO REACH - Seamlessly boost your conference room's mic coverage with genuine Polycom expansion microphones.
CRYSTAL CLEAR CONVERSATIONS - Tri-capsule array and 65 dB signal-to-noise ratio deliver professional-grade sound clarity.

The Polycom RealPresence Trio Expansion Microphones (2200-65790-001) are genuine replacement parts designed to enhance the audio coverage of your Polycom RealPresence Trio conference phone. Featuring a tri-capsule array, 65 dB signal-to-noise ratio, and corded electric power, these microphones deliver crystal-clear sound for professional conferencing environments. Built with durable Polycom materials and engineered for easy integration, they ensure reliable, high-quality audio performance.

Specifications

Audio Sensitivity	54 Decibels
Impedance	2200 Ohm
Microphone Form Factor	Tri-Capsule Array
Item dimensions L x W x H	0.01 x 0.01 x 0.01 inches
Power Source	Corded Electric
Material	Polycom
Signal-to-Noise Ratio	65 dB
Hardware Platform	Karaoke Machine
Number of Channels	1
Frequency Response	15000 Hz
EU Spare Part Availability Duration	1 Years
Manufacturer	POLYCOM Companies
UPC	610807848622 779184012139
Item Weight	1.01 pounds
Product Dimensions	0.01 x 0.01 x 0.01 inches
Item model number	2200-65790-001
Is Discontinued By Manufacturer	No
Material Type	Polycom
Manufacturer Part Number	2200-65790-001

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