What i think i am seeing in the picture is two different converters. is one a straight through gender changer & the other a null modem configuration?

Both of them are standard null modem adapters

Will these pass sound so that I may plug in my Bose speakers?

not sure your application, this is an RS232 signal swap adapter. Here is pinout: pin-1 goes to pin-4, pin-2 to pin-3, pin-5 to pin-5, pin-7 to pin-8, and pins-6&9 are not connected.

Hi, are both of these the exact same? If not what is the difference?

I ordered a 2 pack for work and they are the same.

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DB9 null modem male to female slimline data transfer serial port adapter 2 Pack

Product ID: 294764340

Details

Colour
2 Pack
Compatible devices
PC
Connector type
DB9
Item dimensions L x W x H
33 x 13 x 2
Specific uses for product
PC Laptop

⚡Fully shielded against EMI

🔌DB9 male to female slimline adapter

🛠️Removable & reversible screws

€ 40.44

Duties & taxes included

In stock

Sold byAmazon CyprusDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔗 Connect smarter, not harder—slimline serial power in your pocket!

VERSATILE SCREW CONFIGURATION - Removable and reversible screws offer flexible, secure connections tailored to your setup.
SEAMLESS NULL MODEM CONVERSION - Instantly transform straight cables into null modem wiring—no fuss, just plug & play.
TRUSTED BY PROS LOVED BY USERS - Top-rated with 4.7 stars and over 1,200 reviews—join the savvy tech crowd upgrading their serial connections.
EMI SHIELDING FOR SIGNAL INTEGRITY - Fully shielded connectors ensure clean, interference-free data transfer every time.
SLIMLINE DESIGN FOR PORT PROTECTION - Compact profile reduces leverage strain, extending your device’s port lifespan.

The Arnorin DB9 null modem adapter 2-pack converts standard straight-wired serial cables into null modem configurations with a slim, durable design. Featuring fully shielded connectors to prevent electromagnetic interference and reversible screws for flexible installation, these adapters deliver reliable, plug-and-play data transfer for PCs and laptops. With a compact 33x13x2mm footprint and UL 94V-0 rated insulators, they protect your ports while ensuring signal integrity—perfect for professionals demanding seamless serial communication.

Specifications

ASIN	B075XHWVSJ
Best Sellers Rank	#38,493 in Computers ( See Top 100 in Computers ) #99 in Serial Adapters
Brand	Arnorin
Color	2 Pack
Compatible Devices	PC
Connector Type	DB9
Customer Reviews	4.7 4.7 out of 5 stars (1,204)
External Testing Certification	Não aplicável
Finish	Gold
Input Voltage	9 Volts
Item Dimensions	33 x 13 x 2 millimeters
Manufacturer	Arnorin
Mfr Part Number	KAD9D90001-S-2
Model Number	KAD9D90001-S-2
Number of Items	2
Number of Ports	2
Package Quantity	1
Power Plug Type	No Plug
Specific Uses For Product	PC, Laptop
UPC	613852966235
Unit Count	2.0 Count
Warranty Type	Limited

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TrustScore 4.5 | 7,300+ reviews

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