it work on yeastar s100-040 to expand 2 more fxo?

You. If you already have the S100-040, then yes, the YST-O2M will add another 2 FXO Ports. Make sure you buy from Authorized Seller, since it requires you opening the unit to install the module. >> Platinum Yeastar Partner >>> CITICALLS

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YEASTAR YST-O2-2 FXO Ports O2 Module, 2 FXO Ports

Product ID: 91090015

Details

Brand
YEASTAR
Global Trade Identification Number
Item weight
1 Pounds
Number of ports
2
UPC
088022106511

📞Reliable analog line termination

🔌2 FXO Ports for PSTN lines

⚙️Seamless MyPBX Series compatibility

€ 503.10

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

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Description

🔗 Connect Smarter, Talk Stronger – Power Your PSTN Lines with Yeastar!

MY PBX SERIES READY - Optimized interoperability with MyPBX SOHO, Standard, Pro, E1, and Enterprise models.
DUAL FXO PORTS POWER - Connect two analog PSTN lines effortlessly for expanded telephony capacity.
COMPACT LIGHTWEIGHT - At just 1 pound, it fits perfectly into your existing setup without bulk.
PLUG PLAY INTEGRATION - Simple installation with Yeastar P550 and TDM800 cards for instant connectivity.
TRUSTED BRAND RELIABILITY - Backed by Yeastar’s 30-day warranty and a solid 4.3-star user rating.

The Yeastar YST-O2-2 FXO Module features 2 FXO ports designed to terminate analog PSTN lines, fully compatible with a wide range of MyPBX series devices. Lightweight and easy to install, it ensures reliable telephony integration for professional communication setups, backed by a trusted brand and positive user feedback.

Specifications

ASIN	B005MWMSRY
Brand	YEASTAR
Brand Name	YEASTAR
Customer Reviews	4.3 out of 5 stars 11 Reviews
Global Trade Identification Number	00724580611943
Item Weight	1 Pounds
Item weight	1 Pounds
Manufacturer	Yeastar
Manufacturer Part Number	YST-O2-2 FXO Ports
Model Number	YST-O2-2 FXO Ports
Number of Ports	2
Number of ports	2
Product Warranty	30 DAYS
UPC	088022106511 080850268973 803983025721 086000110284 724580611943 807320382829

Reviews

B**.

Needed with the Yeastar P550 to connect PSTN lines

28.09.2025

B**R

Did not work with S50

29.06.2023

M**I

Great product and works perfectly

20.05.2025

J**S

did not work with u200

27.07.2022

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

2 days ago

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Received my product in pristine condition. Great service overall.

1 month ago

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€ 503.10

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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