# InLine 76660W Internal Serial Adapter M.2 Male ASIX AX99100 4 Gbit/s

**URL:** https://aio.lv/en/product--inline-76660w--11430067
**Data updated:** 2025-10-01 09:52 (EEST)
**Category:** Serial & Parallel Cables
**Manufacturer:** InLine
**Manufacturer code:** 76660W
**EAN:** 4043718341610
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 93.49 €
**Prices and availability valid until:** 2026-07-07 23:59
**Price without VAT (21%):** 77.26 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--inline-76660w--11430067

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

The InLine 76660W is an internal serial adapter featuring an M.2 male interface and ASIX AX99100 chipset. It supports data transfer rates up to 4 Gbit/s and operates at a power supply input voltage of 3.3 V. Compatible with various Windows and Linux operating systems, this adapter is ideal for enhancing connectivity in your system.

## Long description

The InLine 76660W internal serial adapter converts an M.2 module connection into four independent serial DB9 (9-pin) ports. It uses a PCIe 3.0 x4 interface with an ASIX AX99100 controller and supports data transfer rates up to 4 Gbit/s. The M.2 card receives power from the PCIe bus (3.3 V) and includes low- and high-profile slot brackets plus DB9 cables for installation in standard and compact systems.
Advantages
The adapter provides four serial 9-pin interfaces from a single M.2 module slot, with automatic PCIe lane detection at boot for straightforward integration. Onboard LED indication shows read/write activity, and no additional driver installation is required for supported operating systems. Compact M.2 dimensions and included mounting brackets make the card suitable for diverse chassis types.
Suitable for
Adding multiple RS-232/serial ports to desktop or embedded systems
Industrial controllers and legacy device connectivity
Systems with available M.2 (Key M) module slot and PCIe x4/x8/x16 slots
Key specifications
Product name: InLine 76660W Internal Serial Adapter
Interface: PCIe 3.0 x4 (compatible with x8/x16 slots)
Controller: ASIX AX99100
Maximum data rate: up to 4 Gbit/s
M.2 module slot: Key M (supports sizes 2230, 2242, 2260, 2280)
Serial ports: 4 × DB9 (9-pin)
Power supply: via PCIe bus, 3.3 V
Operating temperature: -40 °C to +85 °C
Dimensions (M.2 board): 22 mm × 80 mm
Compatibility: Windows 11/10/8.1/8/7, Windows Server 2012 R2, Linux (kernel ≥ 2.6)
Package contents: card, 4 low-profile brackets, 2 high-profile brackets, 4 × DB9 cables (20 cm), 10 × screws, driver CD, user manual (DE/EN)
How to use
Install an appropriate M.2 module (Key M, sizes 2230–2280) into the adapter’s M.2 slot. Insert the adapter into a free PCIe x4/x8/x16 slot on the motherboard; the card will receive power from the PCIe bus. Connect serial devices to the four DB9 ports using the supplied cables. The card performs automatic lane detection during boot. Ensure the chosen M.2 module is compatible with your system and securely fasten the adapter using the supplied brackets and screws.
Usage recommendations
For stable operation, use a PCIe slot that supports PCIe 3.0 and verify operating system compatibility before connecting critical devices. Select the correct M.2 module size for the onboard slot and secure the card with the appropriate profile bracket when installing in compact systems.

## Specifications

| Feature | Value |
|---|---|
| Internal | Yes |
| Weight | 0.044 kg |
| Chipset | ASIX AX99100 |
| Operating temperature (T-T) | -40 - 85 |
| Serial interface type | 9-pin |
| Power supply input voltage | 3.3 |
| Serial ports quantity | 4 |
| LED indicators | Y |
| Width | 22 mm |
| Depth | 80 mm |
| Cables included | Serial |
| Host interface | M.2 |
| Country of origin | Taiwan |
| Manual | Yes |
| Package type | Hanging box |
| Drivers included | Yes |
| Windows operating systems supported | Windows 10, Windows 11, Windows 7, Windows 8, Windows 8.1 |
| Linux operating systems supported | Linux Kernel 5.9, Kernel 3.3, Kernel 4.6.4, Linux Kernel 5.10, Linux Kernel 5.11, Linux Kernel 5.12, Linux Kernel 5.13, Linux Kernel 5.14, Linux Kernel 5.15, Linux Kernel 5.19, Linux Kernel 5.4, Linux Kernel 5.8, Kernel 3.17, Linux Kernel 6.2, Kernel 2.6.31, Kernel 2.6.33, Kernel 3.12 |
| Server operating systems supported | Windows Server 2012 R2 |
| Output interface | Serial |
| Mounting brackets included | Yes |
| Data transfer rate (max) | 4 Gbit/s |
| Expansion card standard | PCIe 3.0 |
| Host interface gender | Male |
| Compliance certificates | TÜV mark, Federal Communications Commission (FCC), CE |

## FAQ

### How much does the InLine 76660W Internal Serial Adapter cost, and is it available for purchase?

The price is 93.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 42 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 08.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All InLine products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized InLine service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11430067/66172375_large.webp