NOTICE OF NETWORK COMPATIBILITY
This Notice of Network Compatibility (this “Notice”) is effective as of 07/21/2023 10:46:10
AM (the “Effective Date”) and is issued by AT&T Mobility LLC on behalf of itself and its
affiliates (collectively “AT&T”) to Lantronix, Inc. (“Device Manufacturer”) dated 07/21/2023
10:46:10 AM.
This Notice applies only to the following product (the “Product”):
Module:Manufacturer: u-blox
Model: SARA-R412M
Software:Revision: M0.12.00, A.02.19
Hardware: 324A02
FCC ID: XPYUBX18ZO01
PTCRB Request #: 87584
Device:Manufacturer: Lantronix, Inc.
Model: FOX3-4G-M1
Software: 11Hardware: A
FCC ID: XPYUBX18ZO01
PTCRB Request #: 111678

Onboarding Tool Device ID: BI005215
Category: NR-AM-DO
Release Type: Initial
FirstNet Tested: No
Device Identification Method:
IMEI File Upload (NOTE: This Notice of Network Compatibility is
subject to revocation if ayu@lantronix.com does not provide initial file
upload of legacy devices as described athttps://iotdevices.att.com/att-iot/IDthroughIMEI.aspx within 60 days of
the issuance of this letter.)Connection Mgr/ACM Version:AT&T Confidential and Proprietary Material. Use only pursuant to Company instructions.

Attachment A: Not ApplicableThis Notice only relates to the Product as specifically described herein and any variations
from these component versions, no matter how slight, are not covered by this Notice.
Note: Additional conditions for this approval:• None1. Testing
AT&T performed applicable testing on the Product (the “Testing”). This includes testing for:• Negative impacts on AT&T’s wireless network.
• Baseline regulatory confirmation.
• RF testing against components in the wireless AT&T network.
• Network selection testing.

2. Testing Results
The device under test was not observed to cause any adverse problems to the AT&T
network when activated and used in the lab. The device under test is certified for both CSand PS services (as applicable). Any change to the mode of operation invalidates the AT&T
Certification.

3. Limitations
Because of the limited scope of the Testing, AT&T does not make any representations
regarding any feature, function or other characteristic of the Product not described herein,
including, but not limited to, the following:
1. Data throughput performance.
2. Voice quality performance.
3. Manufacturing/assembly issues.
4. RF Parametric performance beyond PTCRB testing.Voice and Data interaction handling.
5. Consumer handset-based features including Java applications, MMS, SMS.
6. System, component level, or application level security performance.
7. Ability to make Emergency calls (for example to 911) as this is the responsibility of themanufacturer to test and meet the emergency location requirements.
Manufacturer will not identify AT&T or its Affiliates in any advertising, sales material, press
release, public disclosure or publicity without prior written authorization by AT&T
Furthermore, AT&T does not make any representation or warranty, express or implied, toany person or entity, including, without limitation, any warranties regarding the performance,desirability, merchantability, suitability, originality, quality, fitness for a particular purpose orotherwise (irrespective of any previous course of dealings between the parties or custom orusage of trade), with respect to the Product. Device Manufacturer may not make any
representation to any third party inconsistent with the terms of this Notice.
1. Lantronix, Inc. General Indemnity Obligations. Lantronix, Inc. as Indemnifying Party,
will defend, indemnify and hold harmless AT&T, and its Affiliates, directors, officers, andemployees from and against any and all third-party claims, including but not limited to
End User claims, causes of action, demands, liabilities, damages, losses, judgments,settlements, costs and expenses, including punitive damages, court costs, andreasonable attorneys’ and expert witness’ fees before and at trial and on appeal(collectively “Claims”) related to or arising out of (i) the use of the Lantronix, Inc. FOX34G-M1; (ii) services delivered by Lantronix, Inc. through information services orAT&T Confidential and Proprietary Material. Use only pursuant to Company instructions.

applications on the Lantronix, Inc. FOX3-4G-M1; (iii)the battery in the Lantronix, Inc.
FOX3-4G-M1; or (iv) personal injury, death or property damage arising out of use of theLantronix, Inc. FOX3-4G-M1 or the information services and/or applications on ordelivered by the Lantronix, Inc. FOX3-4G-M1 except to the extent such Claim arises
solely out of the use of the Service and not out of the use of the Lantronix, Inc. FOX3-4GM1.
2. Disclaimer of Warranties: EXCEPT AS EXPRESSLY STATED IN THIS NOTICE,EACH PARTY DISCLAIMS ALL WARRANTIES, EITHER EXPRESSED OR IMPLIED,WITH RESPECT TO GOODS OR SERVICES HEREUNDER, INCLUDING, BUT NOTLIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR APARTICULAR PURPOSE. AT&T SUPPLIES A SERVICE, NOT GOODS. AT&T DOESNOT GUARANTEE COMPANY OR ANY END USER UNINTERRUPTED SERVICE.
AT&T IS NOT THE MANUFACTURER OF ANY Lantronix, Inc. EQUIPMENT ANDMAKES NO WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT THERETO.
AT&T HAS NO RESPONSIBILITY OR LIABILITY FOR ANY BATTERY IN A Lantronix,Inc. FOX3-4G-M1.TO THE EXTENT AT&T PROVIDES ACCESS TO INFORMATIONPROVIDED BY OTHER SOURCES, AT&T ACCEPTS NO LIABILITY FOR AND MAKESNO WARRANTIES, EXPRESS OR IMPLIED, WITH RESPECT TO THE CONTENTTHEREOF. Lantronix, Inc. HAS NOT RELIED ON AND WILL NOT CLAIM THAT IT ISENTITLED TO THE BENEFITS OF ANY REPRESENTATIONS, PROMISES,DESCRIPTION OF SERVICES OR OTHER STATEMENT NOT SPECIFICALLY SETFORTH IN THIS NOTICE.
AT&T Mobility LLC
By (PC): Chirag Patel
Name: Peter Wong
Title: Director, Device Architecture Realization - IoTDate: 07/21/2023 10:46:10 AM

AT&T Confidential and Proprietary Material. Use only pursuant to Company instructions.